Cancer Prevention Research Center

Dedicated to helping people change their behavior for living longer, healthier lives


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Transtheoretical Model

Contact Information

130 Flagg Road
Kingston, RI 02881
Phone: 401-874-2830
FAx: 401-874-5562

Office Hours
Monday - Friday
9:00am - 5:00pm

Wayne F. Velicer, Ph.D.

  • Co-Director, CPRC, URI
  • Professor of Psychology, URI
  • Phone: 401.874.2830
  • Email:


Wayne F. Velicer is the Co-Director of the Cancer Prevention Research Center at the University of Rhode Island and Professor of Psychology.

He received his Ph.D. in Psychology from Purdue University in 1972. He has published more than 175 papers on a variety of topics in Health Psychology and Behavioral Statistics.

In Health Psychology, his contributions include pioneering the application of computer-based intervention to health promotion and disease prevention. He is one of the principal developers of the Transtheoretical Model of Behavior Change.

In Behavioral Statistics, his work has focused on factor analysis and component analysis, pioneered the application of time series analysis to the behavioral sciences, and refined methods for measurement development. He was identified as one of the highest impact authors in Psychology (average citation per paper) by the major studies in 1992, 1996, and 2003.

He has been Principal Investigator or Co-PI on more than $70 million in research grants. He was a contributing author to the 1990 Surgeon General’s Report and is the Editor of the Research Methods volume of the Handbook of Psychology (Wiley). In 2000, he received the University of Rhode Island Scholarly Excellence Award.

He has been a Visiting Professor at the University of Western Ontario (London, Canada), Macquirie University (Sydney, Australia), the University of Limburg (Maastrich, The Netherlands), the University of New South Wales (Sydney, Australia), the University of Marburg (Marburg, Germany), and the Queensland University of Technology (Brisbane, Australia).

He is a regular reviewer for more than 15 journals and 6 funding agencies in both the USA and abroad. He has regularly served as an invited speaker for both Behavioral Statistics and Health Psychology topics.


A. Factor / Component Analysis and Structural Models

  1. Velicer, W. F. (1974).  An empirical comparison of the stability of factor analysis, principal component analysis, and image analysis.  Educational and Psychological Measurement, 34, 563‑572.

  2. VelicerW. F. (1976).  The relation between factor score estimates, image scores and principal component scores.  Educational and Psychological Measurement, 36, l49‑l59.

  3.  Velicer, W. F. (1976).  Determining the number of components from the matrix of partial correlations.  Psychometrika, 4l, 32l‑327.

  4. Velicer, W. F. (1977). An empirical comparison of factor, image, and principal component patterns.  Multivariate Behavioral Research, 12, 3‑22.

  5. Zwick, W.R., & VelicerW. F. (1982).  Variables influencing four rules for determining the number of components to retain.  Multivariate Behavioral Research, 17, 253‑269.

  6. Velicer, W. F., Peacock, A.C., & Jackson, D.N. (1982).  A comparison of component and factor patterns: A Monte Carlo approach.  Multivariate Behavioral Research, 17, 371‑388.

  7. Zwick, W.R., & Velicer, W. F.  (1986). Factor influencing five rules for determining the number of components to retain.  Psychological Bulletin, 99, 432‑442.

  8. Velicer, W. F., & Fava, J.L.  (1987).  An evaluation of the effects of variable sampling on component, image, and factor analysis.  Multivariate Behavioral Research, 22, l93‑2l0.

  9. Guadagnoli, E., & Velicer, W. F.  (1988).  Relation of sample size to the stability of component patterns.  Psychological Bulletin, 103, 265‑275.

  10. Velicer, W. F., & Jackson, D.N.  (1990).  Component analysis vs. common factor analysis: Some issues in selecting an appropriate procedure.  Multivariate Behavioral Research, 25, 1-28.

            (Target paper for a special issue of Multivariate Behavioral Research, which included comments on the Velicer and Jackson paper by P. Bentler & Y. Kano; F. Bookstein; R. Gorsuch; R. Loehlin; J. McArdle; S. Mulaik; W. Rozenboom; J. Steiger; P. Schonemenn; and K. Wediman, and the response below.).

  11. Velicer, W. F., & Jackson, D.N.  (1990).  Component analysis vs. common factor analysis: Some further observations.  Multivariate Behavioral Research, 25, 95-112.

  12. Guadagnoli, E., & VelicerW. F.  (1991).  A comparison of several factor matching indices: A simulation study.  Multivariate Behavioral Research, 26, 323-343.

  13. Fava, J.L., & Velicer, W. F.  (1992).  An empirical comparison of factor, image, component, and scale scores.  Multivariate Behavioral Research, 27, 301-322.

  14. Fava, J.L., & Velicer, W. F.  (1992).  The effects of overextraction on factor and component analysis. Multivariate Behavioral Research, 27, 387-415.

  15. Ding, L., Velicer, W. F., & Harlow, L.L. (1995).  Effects of estimation methods, number indicators per factor, and improper solutions on structural equation modeling fit indices.Structural Equation Modeling: A Multidisciplinary Journal, 2, 119-144.

  16. Fava, J.L., & Velicer, W. F.  (1996) The effects of underextraction in factor and component analysis. Educational and Psychological Measurement, 56, 907-929.

  17. Velicer, W. F., & Fava, J.L.  (1998). The effects of variable and subject sampling on factor pattern recovery.  Psychological Methods, 3, 231-251.

B. Disease Prevention and Health Promotion

  1. McConnaughy, E.N., Prochaska, J.O., & Velicer, W. F. (1983).  Stages of change in psychotherapy: Measurement and sample profiles.   Psychotherapy: Theory, Research and Practice, 20, 368‑375.

  2. Velicer, W. F., DiClemente, C.C., Prochaska, J.O., & Brandenberg, N. (1985).  A decisional balance measure for assessing and predicting smoking status.  Journal of Personality and Social Psychology, 48, 1279‑1289.

  3. Elder, J.P., …, & Velicer, W. F.  (1985).  A multivariate evaluation of the Health Attitudes and Behaviors Scale (HABS).  Preventive Medicine, 14, 34-54.

  4. Prochaska, J.O., DiClemente, C.C., Velicer, W. F., Ginpil, S., & Norcross, J.C.  (1985).  Predicting change in status for self‑changers.  Addictive Behaviors, l0, 395‑406.

  5. Wilcox, N.S., Prochaska, J. O., Velicer, W. F., & DiClemente, C.C. (1985).  Subject characteristics as predictors of self‑change in smoking.  Addictive Behaviors, l0, 407‑4l2.

  6. Stern, R.A., Prochaska, J.O., Velicer, W. F., & Elder, J.P. (l987).  Stages of adolescent cigarette smoking acquisition: Measurement and sample profiles.  Addictive Behaviors, l2, 3l9‑329.

  7. Humphrey, A.B., Buechner, J.S., & Velicer, W. F.  (1987). Differentiating geographic areas by socioeconomic characteristics. Northeast Journal of Business and Economics, l3, 47‑64.

  8. Prochaska, J.O., Velicer, W. F., DiClemente, C.C., & Fava, J.L. (l988).  Measuring the processes of change: Applications to the cessation of smoking. Journal of Consulting and Clinical Psychology, 56, 520‑528.

  9. O’Connell, D., & Velicer, W. F.  (1988).  A decisional balance measure for weight loss. The International Journal of Addictions, 23, 729‑750.

  10. McConnaughy, E.A., DiClemente, C.C., Prochaska, J.O., & Velicer, W. F.  (1989).  Stages of change in psychotherapy: A follow‑up report.  Psychotherapy, 26, 494-503.

  11. Velicer, W. F., DiClemente, C., Rossi, J.S., & Prochaska, J.O. (1990).  Relapse situations and self‑efficacy: An integrative model.  Addictive Behaviors, 15, 271-283.

  12. Prochaska, J.O., Velicer, W. F., DiClemente, C.C., Guadagnoli, E., & Rossi, J.  (1991).  Patterns of Change: A dynamic typology applied to smoking cessation. Multivariate Behavioral Research, 26, 83-107.

  13. DiClemente, C.C., Prochaska, J.O., Fairhurst, S., Velicer, W. F., Rossi, J.S., & Velasquez, M. (1991). The process of smoking cessation: An analysis of precontemplation, contemplation and contemplation/action.  Journal of Consulting and Clinical Psychology, 59, 295-304.

  14. Velicer, W. F., Prochaska, J.O., Rossi, J.S., & Snow, M.  (1992). Assessing outcome in smoking cessation studies.  Psychological Bulletin, 111, 23-41.

  15. Rakowski, W., Dubé, C., Marcus, B., Prochaska, J.O., Velicer, W. F., & Abrams, D. (1992). Extending the transtheoretical model of behavior change to screening mammography.  Health Psychology, 11, 111-118.

  16. Velicer, W. F., Richmond, R., Greeley, J., Seift, W., & Redding, C.R. (1992).  A time series investigation of three nicotine regulation models.  Addictive Behaviors, 17, 325-345.

  17. Prochaska, J.O., DiClemente, C.C., Velicer, W. F., & Rossi, J.S. (1992).  Criticisms and concerns of the transtheoretical model in light of recent research.  British Journal of Addiction, 87, 825-828.

  18. Rossi, S.R., Rossi, J.S., Prochaska, J.O., & Velicer, W. F. (1992). Application of the transtheoretical model of behavior change to dietary fat reduction. International Journal of Psychology, 27, 628. [Abstract].

  19. VelicerW. F., Hughes, S.L., Fava, J.L., & Prochaska, J.O. (1992).  An empirical typology of subjects within stages of change.  International Journal of Psychology, 27, 623.  [Abstract].

  20. Velicer, W. F., & DiClemente, C.C.  (1993).  Understanding and intervening with the total population of smokers.  Tobacco Control, 2, 95-96.

  21. Prochaska, J.O., DiClemente, C.C. Velicer, W. F., & Rossi, J.S. (1993).  Standardized, individualized, interactive and personalized self-help programs for smoking cessation. Health Psychology, 12, 399-405.

  22. Velicer, W. F., Prochaska, J.O., Bellis, J.M., DiClemente, C.C., Rossi, J.S., Fava, J.L.,  & Steiger, J.H.  (1993).  An expert system intervention for smoking cessation.Addictive Behaviors, 18, 269-290.

  23. Rakowski, W., Bellis, J.M., Velicer, W. F., & Dube, C.A.  (1993). Smoking status and mammography in a statewide survey.  Addictive Behaviors, 18, 691-696.

  24. Prochaska, J.O., Velicer, W.F., Rossi, J.S., Goldstein, M.G., Marcus, B.H., Rakowski, W., Fiore, C., Harlow, L.L., Redding, C.A., Rosenbloom, D., & Rossi, S.R. (1994).  Stages of change and decisional balance for twelve problem behaviors. Health Psychology, 13, 39-46.

  25. Prochaska, J.O., Redding, C.A., Harlow, L.L., Rossi, J.S., & Velicer, W.F.  (1994).  The transtheoretical model of change and HIV prevention: A review.  Health Education, 21, 471-486.

  26. Prokhorov, A.V., Velicer, W.F., & Prochaska, J.O.  (1994).  The transtheoretical model of change: A guide for behavioral treatment.  Voprosi Psikhologii (Psychological Aspects)2, 113-122. [Russian].

  27. Abrams, D.B., Orleans, C.T., Niaura, R.N., Goldstein, M.G., Velicer, W.F., & Prochaska, J.O.  (1994).  Smoking treatment issues: Towards a stepped care approach.  Tobacco Control, 2 (suppl.), 517-537.

  28. Velicer, W.F., Laforge, R.G., Levesque, D.A., & Fava, J.L. (1994).  The development and initial validation of the Smoking Policy Inventory.  Tobacco Control, 3, 347-355.

  29. Velicer, W.F., Hughes, S.L., Fava, J.L., Prochaska, J.O., & DiClemente, C.C. (1995).  An empirical typology of subjects within stage of change.  Addictive Behaviors, 20, 299-320.

  30. Grimley, D.M., Prochaska, J.O., Velicer, W.F., & Prochaska, G.E.  (1995).  Contraceptive and condom use adoption and maintenance: A stage paradigm approach. Health Education Quarterly. 22, 20-35.

  31. Velicer, W.F., Fava, J.L., Prochaska, J.O., Abrams, D.B., Emmons, K.M., & Pierce, J. (1995) Distribution of smokers by stage in three representative samples. Preventive Medicine, 24, 401-411.

  32. Fava, J.L., Velicer, W.F., & Prochaska, J.O.  (1995)  Applying the transtheoretical model to a representative sample of smokers.  Addictive Behaviors, 20, 189-203.

  33. Velicer, W.F., Prochaska, J.O., Rossi, J., & DiClemente, C.C.  (1996) A criterion measurement model for addictive behaviors.  Addictive Behaviors, 21, 555-584.

  34. Prochaska, J.O., & Velicer, W.F.  (1996). On models, methods, and premature conclusions.   Addiction, 91, 1281-1283.

  35. Velicer, W.F. (1996) Introduction to special issue of Addictive BehaviorsAddictive Behaviors, 21, 1-2.

  36. Abrams, D.B., Orleans, C.T., Niaura, R.S., Goldstein, M.G., Prochaska, J.O, &Velicer, W.F.  (1996) Integrating individual and public health perspectives for treatment of tobacco dependence under managed health care: A combined step care and matching model.  Annuals of Behavioral Medicine, 18, 290-304.

  37. Grimley, D.M., Prochaska, G.E., Prochaska, J.O,. Velicer, W.F., Galavotti, C., Cabral R. J. &Lanky, A. (1996). Cross-validation of measures assessing decision balance and self-efficacy for condom use.  American Journal of Health Behavior, 20, 406-416.

  38. Schofield, P. E., Hill, D. J., & Velicer, W. F. (1997) Smoking Policy Interventions: Is Australian youth in favor of them?  Health Promotion Journal of Australia, 7, 4-10.

  39. Migneault, J.P., Pallonen, U.E., & Velicer, W.F.  (1997) Decisional balance and stage of change for adolescent drinking.  Addictive Behaviors, 22, 339-351.

  40. Reed, G. R., Velicer, W. F., & Prochaska, J. O.  (1997) What makes a good staging algorithm: Examples from regular exercise.  American Journal of Health Promotion, 12, 57-67.

  41. Velicer, W. F., & Prochaska, J. O. (1997) Introduction to special issue of American Journal of Health PromotionAmerican Journal of Health Promotion, 12, 6-7.

  42. Prochaska, J. O., & Velicer, W.F. (1997).  The Transtheoretical Model of health behavior change. (Invited paper).  American Journal of Health Promotion, 12, 38-48.

  43. Prochaska, J. O., & Velicer, W.F. (1997).  Misinterpretations and misapplications of the Transtheoretical Model. (Invited paper).  American Journal of Health Promotion, 12, 11-12.

  44. Pallonen, U. E., Prochaska, J. O., Velicer, W. F., Prokhorov, A. V., & Smith, N. F.  (1998) Stages of acquisition and cessation for adolescent smoking: An empirical investigation.  Addictive Behaviors, 23, 303-324.

  45. Pallonen, U.E., Velicer, W.F., Prochaska, J.O., Rossi, J.S., Bellis, J.M., Tsoh, J.Y., Migneault, J.P., Smith, N.F., & Prokhorov, A.V.  (1998) Computer-based smoking cessation interventions for adolescents: Description, feasibility, and six-month follow-up findings.  Substance Use & Misuse, 33, 935-965.

  46. Norman, G. J., Velicer, W. F., Fava, J. L., & Prochaska, J. O.  (1998) Dynamic typology clustering within the stages of change for smoking cessation.  Addictive Behaviors, 23, 139-153.

  47. Velicer, W. F., Prochaska, J. O., Fava, J. L., Norman, G. J., & Redding, C. A. (1998) Smoking cessation and stress management: Applications of the Transtheoretical Model of behavior change.  Homeostasis, 38, 216-233.

  48. Laforge, R.C., Velicer, W.F., Levesque, D. A., Fava, J.L., Hill, D. J., Scholfeld, P. E., Fau, D., De Vries, H., Shisana, W.O., & Conner, M.  (1998). Measuring support for tobacco control policies in six countries. Tobacco Control, 7, 241-246.

  49. Rakowski, W., Ehrich, B., Goldstein, M.G., Rimer, B.K., Pearlman, D.N., Clark, M.A.,Velicer, W.F., & Woolverton, H. (1998).  Increasing mammography among women aged 40-74 by use of a stage-matched, tailored intervention.  Preventive Medicine, 27, 748-756.

  50. Greene, G.W., Rossi, S.R., Rossi, J.S., Fava, J.L., Prochaska, J.O., & Velicer, W.F.(1998). An expert system intervention for dietary fat reduction. Annals of Behavioral Medicine20 (supplement), S197.

  51. Migneault, J.P., Velicer, W.F., Prochaska, J. O., & Stevenson, J. F. (1999).  Decisional balance for immoderate drinking in college students.  Substance Use and Misuse, 34, 1325-1346.

  52. Laforge, RG, Rossi, JS, Prochaska, JO, Velicer, W.F., Levesque, DA, & McHorney, CA. (1999). Stage of regular exercise and health-related quality of life.  Preventive Medicine, 28, 349-360.

  53. Velicer, W.F., & Prochaska, J. O. (1999).  An expert system intervention for smoking cessation.  Patient Education and Counseling, 36, 119-129.

  54. Velicer, W. F, Prochaska, J. O., Fava, J. L., Laforge, R. G., & Rossi, J. S. (1999) Interactive versus non-interactive interventions and dose-response relationships for stage matched smoking cessation programs in a managed care setting.  Health Psychology, 18, 21-28.

  55. Harlow, L.L., Prochaska, J. O., Redding, C.A., Rossi, J. S. Velicer, W.F., Snow, M. G., Schnell, D., Galavotti, C., O’Reilly, K., & Rhodes, F. and the AIDS Community Demonstration Research Group. (1999)  Stages of condom use in a high HIV-risk sample.  Psychology & Health, 14, 143-157.

  56. Laforge, RG, Velicer, W.F., Richmond, R &Owen, N. (1999).  Stage distributions for five health behaviors in the USA and Australia.  Preventive Medicine, 28, 61-74.

  57. Redding, CA, Prochaska, JO, Pallonen, UE, Rossi, JS, VelicerWF, Rossi, SR, Greene, GW, Meier, K, Evers, KS, Plummer, BA, & Maddock, JE.  (1999).  Transtheoretical individualized multimedia expert systems targeting adolescents’ health behaviors.  Cognitive and Behavioral Practice, 6, 144-153.

  58. Greene, G. W., Rossi, S. R., Rossi, J. S., Velicer, W. F., Fava, J. L., & Prochaska, J. O.  (1999). Dietary applications of the stages of change model.  Journal of the American Dietetic Association, 99, 673-678.

  59. Velicer, W.F., Norman, G. J., Fava, J. L., & Prochaska, J. O. (1999).  Testing 40 predictions from the Transtheoretical Model.  Addictive Behaviors, 24, 455-469.

  60. Nigg, C. R., Burbank, P. M., Padula, C., Dufresne, R., Rossi, J. S., Velicer, W. F., Laforge, R. G., & Prochaska, J. O.  (1999).  Stages of change across ten health risk behaviors for older adults. Gerontologist, 39, 473-482.

  61. Norman, G.J., Velicer, W.F., Fava, J.L., & Prochaska, J. O.  (2000). Cluster subtypes within stage of change for a representative sample of smokers.  Addictive Behaviors, 25, 183-204.

  62. Levesque, D. A., Gelles, R. J., & Velicer, W. F. (2000)  Development and validation of a stages of change measure for men in batter treatment.  Cognitive Therapy and Research, 24, 175-199.

  63. Borland, R., Segan, C., & Velicer, W.F.  (2000). Testing the Transtheoretical Model for Smoking Change: Victorian Data.  Australian Journal of Psychology, 52, 83-88.

  64. Velicer, W. F., Prochaska, J. O., Fava, J. L., Rossi, J. S., Redding, C. A., Laforge, R. G., Robbins, M. L.  (2000).  Using the Transtheoretical Model for Population-based Approaches to Health Promotion and Disease Prevention. Homeostasis in Health and Disease, 40, 174-195.

  65. Prochaska, J. O., Velicer, W. F., Fava, J. L., Ruggiero, L., Laforge, RG, Rossi, JS, Johnson, SS, & Lee, PA. (2001).  Counselor and stimulus control enhancements of a stage-matched expert system intervention for smokers in a managed care setting.Preventive Medicine, 32, 23-32.

  66. Plummer, B. A., Velicer, W.F., Redding, C.A., Prochaska, J. O., Rossi, J. S., Pallonen, U.E., & Meier, K. S. (2001). Stage of Change, Decisional Balance, and Temptations for Smoking: Measurement and Validation in a Large, School-based Population of Adolescents. Addictive Behaviors, 26, 551-571.

  67. Prochaska, J. O., Velicer, W. F., Fava, J. L., Rossi, JS, & Tsoh, JY (2001) Evaluating a Population-based Recruitment Approach and a Stage-based Expert System Intervention for Smoking Cessation.  Addictive Behaviors, 26, 583-602.

  68. Emmons, K.M., Wong, M., Hammond, S. K., Velicer, W.F., Fava, J. L., Monroe, A., & Johnson, J. L. (2001)  Intervention and policy issues related to children’s exposure to tobacco smoke.  Preventive Medicine, 32, 321-331.

  69. Hall, S. M., Delucchi, K. L., Velicer, W. F., Kahler, C. W., Ranger-Moore, J., Hedeker, D., Tsoh, J. Y., & Niaura, R.  (2001).  Statistical analysis of randomized trials in tobacco treatment: Longitudinal designs with dichotomous outcome.  Nicotine & Tobacco Research, 3, 193-202.

  70. Redding, C. A., Rossi, J. S., Rossi, S. R., Velicer, W. F., & Prochaska, J. O. (2000). Health Behavior Models.  The International Electronic Journal of Health Education, 3 (Special Issue), 180-193. (

  71. Benowitz, N. L., Jacob, III, P., Ahijevych, K., Jarvis, M. J., Hall, S., LeHouezec, J., Hansson, A., Lichtenstein, E., Henningfield, J., Tsoh, J., Hurt, R. D., & Velicer, W. F. (2002). Biochemical verification of tobacco use and cessation. Nicotine & Tobacco Research, 4, 149-159.

  72. Rossi, S. R., Greene, G. W., Rossi, J. S., Plummer, B. A., Benisovich, S.V., Keller, S,Velicer, W. F., Redding, C. A., Prochaska, J. O., Pallonen, U. E., & Meier, K. S. (2001). Validation of decisional balance and temptations measures for dietary fat reduction in a large school-based population of adolescents.  Eating Behaviors, 2, 1-18.

  73. Emmons, K. M., Hammond, S.K., Fava, J. L., Velicer, W. F., Johnson, J. L., & Monroe, A. D. (2001). A Randomized Trial to Reduce Passive Smoke Exposure in Low Income Households with Young Children.  Pediatrics, 108, 18-25.

  74. Johnson, J. L., Fava, J. L., Velicer, W. F., Monroe, A. D., & Emmons, K. M. (2002). Testing Stage Effects in an Ethnically Diverse Sample.  Addictive Behaviors. 27, 605-617.

  75. Velicer, W. F.  (2001).  Reply to Letter to the Editor.  Preventive Medicine32. 390.

  76. Strecher, V. J., & Velicer, W. F.  (in press).  Tailoring smoking cessation programs to the specific needs and interests of the patient.  British Medical Journal, 00, 00-00.

  77. Strecher, V. J., Velicer, W. F., & Little, R.  (in press).  Rapid response: Comments on Lennox et al.  British Medical Journal, 00, 00-00.

  78. Prochaska JO, Velicer WF, Rossi JS, Redding CA, Greene GW, Rossi SR, Sun X, Fava JL, Laforge R, & Plummer B. (2002). Impact of simultaneous stage-matched expert systems for multiple behaviors in a population of parents. Annals of Behavioral Medicine, 24, S191. (Abstract).

  79. Redding CA, Prochaska JO, Goldstein M, Velicer WF, Rossi JS, Sun X, Rakowski, W, Rossi SR, Greene GW, DePue, J, Fava J, Laforge R, Ehrlich B., Willey, C., & Niaura, R.  (2002). Efficacy of stage-matched expert systems in primary care patients to decrease smoking, dietary fat, sun exposure, and relapse from mammography. Annals of Behavioral Medicine, 24, S191. (Abstract).

  80. Clark, M. A., Rakowski, W., Ehrich, B, Rimer, B. K., Velicer, W. F., Dube, C. E., Pearlman, D. N., Peterson, K. K., & Goldstein, M. (2002). The effect of a stage-matched and tailored intervention on repeat mammography. American Journal of Preventive Medicine, 22, 1-7.

  81. Cummins, C.O., Prochaska, J.O., Driskell, M.M., Evers, K.E., Wright, J.A., Prochaska, J.M., & Velicer, W.F. (2003).  Development of review criteria to evaluate health behavior change websites.  Journal of Health Psychology, 8, 55-62.

  82. Evers, K. E., Prochaska, J. M., Driskell, M. M., Cummins, C. O., Prochaska, J.O., &Velicer, W. F. (2003).  Strengths and weaknesses of health behavior change programs on the internet. Journal of Health Psychology, 8, 63-70.

  83. Velicer, W, Fava, J., Prochaska, J, Ward, W., Cottrill, S., Friedman, R., Ramelson, H., Keller, S., Robins, A., & Gulliver, S. (2002). Evaluating the effectiveness of NRT therapy in a population: Preliminary outcome (20 months).  Nicotine & Tobacco Research, 4, 369. (Abstract).

  84. Velicer, W.F., Fava, J., Prochaska, J., Ward, R., Cottrill, S., Friedman, R., Ramelson, H., Keller, S., Robins, A., & Gulliver, S. (2002) Evaluating the Effectiveness of Nicotine Replacement Therapy in a Defined Population. International Journal of Behavioral Medicine, 9 (S 1), 285 (Abstract).

  85. Velicer, W. F., Prochaska, J, Redding, C, Rossi, J, Sun, X, Rossi, S, Greene, G, Fava, J, Laforge, R, Goldstein, M., Rakowski, W., DePue, J., & Ehrlich, B. (2002).  Efficacy of expert system interventions in primary health care patients to decrease smoking, dietary fat, sun exposure, and relapse from mammography.   International Journal of Behavioral Medicine, 9 (S 1), 286 (Abstract).

  86. Fava, J.L., Rossi, J.S., Redding, C.A., Maddock, J.E., Prochaska, J.O., & Velicer, W.F. (in press). Progress toward cessation for smokers in precontemplation: Enhancing the change process. Addictive Behaviors, 00, 00-00.

  87. Norman, G. J., & Velicer, W. F. (2003). Developing an Empirical Typology for Regular Exercise. Preventive Medicine, 37, 635-645.

  88. Prochaska, JO & Velicer, WF. (2003). Impact vs. efficacy for pregnant smokers (Electronic letter). Tobbaco Control, (17 July 2003).

  89. Velicer, W. F., & Prochaska, J. O.  (2004).  A Comparison of Four Self-report Smoking Cessation Outcome Measures.  Addictive Behaviors, 29, 51-60.

  90. Prochaska, J. O., Velicer, W. F., Prochaska, J. M., & Johnson, J. L. (2004).  Size, Consistency and Stability of Stage Effects for Smoking Cessation.  Addictive Behaviors, 29, 207-213.

  91. Prochaska, J. O., Velicer, W. F., Rossi, J. S., Redding, C. A., Greene, G. W., Rossi, S. R., Sun, X., Fava, J. L., Laforge, R., & Plummer, B. A. (2004). Multiple Risk Expert System Interventions: Impact of Simultaneous Stage-matched Expert System Interventions for Smoking, High Fat Diet and Sun Exposure in a Population of Parents.Health Psychology, 23, 503-516.

  92. Ward, R. M., Velicer, W. F., Rossi, J. S., Fava, J. L., & Prochaska, J. O.  (2004).  Factorial Invariance and Internal Consistency for the Decisional Balance Inventory—Short Form.  Addictive Behaviors, 29, 953-958.

  93. Prochaska, J. O. & Velicer, W. F. (2004). Integrating Population Smoking Cessation Policies and Programs. Public Health Reports, 119, 244-252.

  94. Hoeppner, BB, Redding, CA, Rossi, JS, Sun, X, Prochaska, JO, Armstrong, KA, &Velicer, WF.  Predictors of 18-month retention in an adolescent sexual behavior study.  (Abstract). Annuals of Behavioral Medicine, 27, S112.

  95. Prochaska, JO, Velicer, WF, Redding, CA, Rossi, JS, Goldstein, M., DePue, J, Greene, GW, Rossi, SR., Sun, X., Fava, JL, Laforge, R, Rakowski, W, & Plummer, BA. (2005). Stage-based Expert Systems to Guide A Population of Primary Care Patients to Quit Smoking, Eat Healthier, Prevent Skin Cancer and Receive Regular Mammograms.Preventive Medicine, 41, 405-416.

  96. Velicer, WF, Prochaska, JO, Redding, C, Rossi, JS, Sun, X, Rossi, SR, Greene, GW, Fava, JL, Abrams, DB, Linnan, LA, & Emmons, KM.  (2004). Efficacy of Expert System Interventions for Employees to Decrease Smoking, Dietary Fat, and Sun Exposure. International Journal of Behavioral Medicine, 11 (S 1), 277 (Abstract).

  97. Velicer, WF, de Vries, H, Botelho, RJ, Evers, K, Robert Friedman, RH, & Prochaska, JO. (2004). An Overview of Tailored Interventions for Health Behavior Change.International Journal of Behavioral Medicine, 11 (S 1), 344 (Abstract).

  98. Velicer WF, Fava JL, & Prochaska JO. (2004). Testing 40 Predictions From the Transtheoretical Model Again, with Confidence. International Journal of Behavioral Medicine, 11 (S 1), 365 (Abstract).

  99. Hollis, JF, Polen, MR, Whitlock, EP; Lichtenstein, E., Mullooly, JP, Velicer, W.F., & Redding, C.A.  (2005).  TEEN REACH: Outcomes from a randomized controlled trial of a tobacco reduction program among teens seen in primary medical care.  Pediatrics, 115, 981-999.

  100. Velicer, W. F., Keller, S., Friedman, R. H. Fava, J. L., Gulliver, S. B., Ward, R. M., Ramelson, H., Prochaska, J. O., Robins, A. G., & Cottrill, S. D. (2005). Comparing Participants and Non-participants Recruited for an Effectiveness Study of Nicotine Replacement Therapy.  Annuals of Behavioral Medicine, 21, 181-191.

  101. Anatchkova, MD, Velicer, WF, & Prochaska, JO. (2005).  Replication of subtypes for smoking cessation with the contemplation stage of change.  Addictive Behaviors, 30, 915-927.

  102. Anatchkova, MD, Velicer, WF, & Prochaska, JO. (2006). Replication of subtypes for smoking cessation with the Preparation stage of change.  Addictive Behaviors, 31, 915-927.

  103. Prochaska, JJ, Velicer, WF, Prochaska, JO, Delucchi, K, & Hall, SM. (2006).  Comparing intervention outcomes in smokers treated for single versus multiple behavioral risks. Health Psychology, 25, 380-388.

  104. Velicer, WF, Prochaska, JO, & Redding, CA. (2006). Tailored communications for smoking cessation: Past successes and future directions. Drug and Alcohol Review, 25,47-55.

  105. Höppner, BB, Goodwin, MS; Velicer, WF; Mooney, ME; & Hatsukami, DK. (2006). Identifying longitudinal patterns of daily smoking in a nicotine harm reduction intervention. Annuals of Behavioral Medicine, 31, S149 (Abstract).

  106. Höppner, BB, Hall, KL; Rossi, JS; Maddock, JE; Redding, CA; Meier, KS; Velicer, WF, & Prochaska, JO. (2006). Validation of Decisional Balance and Self-Efficacy Scales for Sun Protection in an Adolescent Sample. Annuals of Behavioral Medicine, 31, S040 (Abstract).

  107. Doucet, J.; Paiva, A, Redding, CA, Velicer, WF, Rossi, JS, Meier, KS, Prochaska, JO, & Laforge, R. (2006). Decisional Balance and Temptation Measures for Alcohol Prevention in High School Students. Annuals of Behavioral Medicine, 31, S128 (Abstract).

  108. Dye, G, Rossi, JS, Blissmer, BB, Velicer, WF, Redding, CA, Riebe, D, Meier, KS, Johnson, J, & Prochaska, JO. (2006). Validation and Reliability of Processes of Change Measures for Exercise in an Adolescent Sample. Annuals of Behavioral Medicine, 31, S123 (Abstract).

  109. Dye, G, Rossi, JS, Blissmer, B, Velicer, WF, CA, Riebe, D, Meier, KS, J, Prochaska, JO. (2006). Validation and reliability of the decisional balance, self-efficacy, and family support measures for exercise in parents. Annuals of Behavioral Medicine, 31, 123 (Abstract).

  110. Doucet, J, Paiva, A, Redding, CA, Velicer, WF, Rossi, JS, Meier, KS, Prochaska, JO, & Laforge, R. (2006). Processes of Change for Alcohol Prevention in an Adolescent Sample. Annuals of Behavioral Medicine, 31, S128 (Abstract).

  111. Velicer, WF, Sun, X, Redding, CA, Prochaska, JO, Friedman, RS, & Migneault, J. (2006). Increasing Exercise Adherence in Multiple Risk Factor Interventions. Annuals of Behavioral Medicine, 31, S184 (Abstract).

  112. Stephan, C, Rossi, J, Redding, C, Fava, J, Robbins, M, Velicer, WF, Johnon, J, Mauriello, L, Meier, K, & Prochaska, JO. (2006). Psychometric assessment of the Rhode Island Coping Inventory and Physical Symptoms Scale. Annuals of Behavioral Medicine, 31, S103 (Abstract).

  113. Anatchkova, MD, Velicer, WF, & Prochaska, JO. (2006). Replication of subtypes for smoking cessation with the Precontemplation stage of change. Addictive Behaviors, 31, 1101-1115.

  114. Hoeppner, BB, Velicer, WF, Redding, CA, Rossi, JS, Prochaska, JO, Pallonen, UE, & Meier, KS. (in press). Psychometric Evaluation of the Smoking Cessation Processes-of-Change Scale in an Adolescent Sample. Addictive Behaviors, 00, 00-00.

  115. Doucet, JM, Velicer, WF, Laforge, RG. (in press).  Demographic Differences in Support for Smoking Policy Interventions. Addictive Behaviors, 00, 00-00.

  116. Velicer, WF, Redding, CA, Anatchkova, MD, Fava, JL, & Prochaska, JO. (2007). Identifying Cluster Subtypes for the Prevention of Adolescent Smoking Acquisition. Addictive Behaviors, 32, 228-247.

  117. Velicer, WF, Redding, CA, Sun, X, & Prochaska, JO. (in press). Demographic Variables, Smoking Variables, and TTM-Tailored Outcomes across Five studies of Adults. Health Psychology, 00, 00-00.

  118. Velicer, W. F., Friedman, R. H., Fava, J. L., Gulliver, S. B., Keller, S., Sun, X., Ramelson, H., & Prochaska, J. O. (2006). Evaluating NRT and Stage-based Therapies in a Population-based Effectiveness Trial.  Journal of Consulting and Clinical Psychology, 74, 1162-1172.

  119. Keller, S, Maddock, JE, Laforge, RG, Velicer, WF, Basler, H-D. (2007). Binge drinking and health behaviour in medical students. Addictive Behaviors, 32, 505-515.

  120. Greaves, L., Donna Vallone, D, & Wayne Velicer, WF. (2006). Special Effects–Tobacco Policies and Low SES Girls and Women (Editorial). Journal of Epidemiology and Community Health, 60 (Supp II), ii1-ii2.

  121. Levesque, DA, Velicer, WF, Castle, PH, & Greene, RN. (in press). Resistance among domestic violence offenders: Measure development and initial validity. Violence Against Women, in press.

  122. Velicer, WF, Friedman R, Redding, C, Migneault, J, Hoeppner, BB. Project HEALTH: Comparing three computer-based multiple risk factor interventions. International Journal of Behavioral Medicine, 13 (S 1), 188 (Abstract).

  123. Velicer, WF, Hoeppner, BB, Goodwin, MS, Mooney, ME, Dorothy K. Hatsukami, DK. Longitudinal Patterns of Smoking for Participants in a Nicotine Harm Reduction Intervention. International Journal of Behavioral Medicine, 13 (S 1), 206 (Abstract).

  124. Moolchan, ET, Hayward, MD, Fagan P, Fernander, AF, Velicer, WF, King, G, & Clayton, RR.  (in press). Addressing tobacco-related health disparities.  Addiction, 00, 00-00.

C. Longitudinal Analysi

  1. VelicerW.F. (1972).  Comment on the general inapplicability of Ghiselli’s moderator system for two predictors.  Journal of Applied Psychology, 56, 262‑265.

  2. Velicer, W.F. (1972).  The moderator variable viewed as heterogeneous regression. Journal of Applied Psychology, 56, 266‑269.

  3. Velicer, W.F. (1978).  Suppressor variables and the semipartial correlation coefficient.  Educational and Psychological Measurement, 38, 953‑958.

  4. Velicer, W.F. (1982).  Prediction and association for N‑Way classification tables. Evaluation Review, 6, 247‑266.

  5. Velicer, W.F., & Harrop, J.W. (1983).  The reliability and accuracy of time series model identification.  Evaluation Review, 7, 551‑560.

  6. Velicer, W.F., & McDonald, R.P. (1984).  Time series analysis without model identification.  Multivariate Behavioral Research, 19, 33‑47.

  7. Harrop, J.W., & Velicer, W.F. (1985).  A comparison of three alternative methods of time series model identification. Multivariate Behavioral Research, 20, 27‑44.

  8. Harrop, J.W., & Velicer, W.F.  (1990).  Computer programs for interrupted time series analysis: I.  A qualitative evaluation.  Multivariate Behavioral Research, 25, 219-231.

  9. Harrop, J.W., & Velicer, W.F.  (1990).  Computer programs for interrupted time series analysis: II.  A qualitative evaluation.  Multivariate Behavioral Research, 25, 233-249.

  10. Velicer, W.F., & McDonald, R.P.  (1991). Cross‑sectional time series designs: A general transformation approach.  Multivariate Behavioral Research, 26, 247-254.

  11. Martin, R.A., Velicer, W.F., & Fava, J.L. (1996) Latent transition analysis applied to the stages of change. Addictive Behaviors, 21, 67-80.

  12. Velicer, W.F., Martin. R.A., & Collins, L. M.  (1996). Latent transition analysis for longitudinal data.  Addiction, 91 (Suppl.), S197-S209.

  13. Velicer, W. F., & Plummer, B. A. (1998).  Time series analysis in Historiometry: A comment on Simonton.  Journal of Personality, 66, 477-486.

  14. Sun, X., Fava, J. L., & Velicer, W. F. (2001). Random-effects logistic models for behavioral change studies. Proceedings of the Annual Meeting of the American Statistical Association.  Arlington, VA: American Statistical Association.

  15. Velicer, W.F., & Colby, S.M. (2005).  A Comparison of Missing Data Procedures for ARIMA Time Series Analysis. Educational and Psychological Measurement, 65, 596-615.

  16. Hoeppner, BB, Goodwin, MS, Velicer, WF, & Heltshe, J.  (in press).  An Applied Example of Pooled Time Series Analysis: Cardiovascular Reactivity to Stressors in Children with Autism.  Multivariate Behavioral Research, 00, 00-00.

D. Measurement and Personality Assessment

  1. Velicer, W.F., & Weiner, B.J. (1975).  Effects of sophistication and faking sets on the Eysenck Personality Inventory.   Psychological Reports, 37, 71‑73.

  2. Lord, C.G., & VelicerW.F. (1975).  Effects of sex, birth order, target relationship, and target sex on self disclosure by college students.  Psychological Reports, 37, 1167‑1170.

  3. Flook, W.M., & Velicer, W.F. (1977).  School readiness and teacher’s ratings: A validation study.  Psychology in the Schools, 14, 140‑146.

  4. Burns, C.J., & Velicer, W.F. (1977).  Art instruction and the Goodenough‑Harris Drawing Test in fifth‑graders.  Psychology in the Schools, 14, 109‑112.

  5. VelicerW.F., & Stevenson, J.F. (1978).  The relation between item format and the structure of the Eysenck Personality Inventory.  Applied Psychological Measurement, 2, 293‑304.

  6. Church, M.A., Truss, C.V., & VelicerW.F. (1980).  The structure of the Janis‑Field Feelings of Inadequacy Scale.  Perceptual and Motor Skills, 50, 935‑939.

  7. Oswald, W.T., & Velicer, W.F. (1980).  Item format and the structure of the Eysenck Personality Inventory: A replication.  Journal of Personality Assessment, 44, 283‑288.

  8. Wilkens, J.E., & Velicer, W.F. (1980).  A semantic differential investigation of children’s attitudes towards three stigmatized groups.  Psychology in the Schools, 17, 364‑371.

  9. Baker, E.H., & Velicer, W.F. (1982).  The structure and reliability of the Teacher Temperament Questionnaire.  Journal of Abnormal Child Psychology, 10, 531‑546.

  10. Velicer, W.F., DiClemente, C., & Corriveau, D.P. (1984).  Item format and the structure of the Personal Orientation Inventory.  Applied Psychological Measurement, 8, 409‑419.

  11. Velicer, W.F., Govia, J.M., Cherico, N.P., & Corriveau, D.P.  (1985). Item format and the structure of the Buss‑Durkee Hostility Inventory.  Aggressive Behavior, 11, 65‑82.

  12. Govia, J.M., & Velicer, W.F.  (1985).  A comparison of multi‑dimensional measures of aggression. Psychological Reports, 57, 207‑215.

  13. Groden, G., Groden, J., Dondey, M., Zane, T., Pueschel, S.M., & Velicer, W.F. (1987).  Effects of fenfluramine on the behavior of Autistic individuals.  Research in Developmental Disabilities, 8, 203‑211.

  14. Tavitian, M., Lubiner, J., Green, L., Grebstein, L., & VelicerW.F. (l987).  The development of the Family Functioning Scale. Journal of Social Behavior and Personality, 2, 191‑204.

  15. Velicer, W.F., Huckel, L.H., & Hanson, C.E.  (1989).  A measurement model for measuring attitudes towards violence.  Personality and Social Psychology Bulletin, 15, 349-364.

  16. Groden, J., Diller, A., Bausman, M., Velicer, W.F., Norman, G., & Cautela, J.  (2001).  A stress survey schedule for persons with autism and other developmental disabilities. Journal of Autism and Development Disorders, 31, 207-217.

  17. Goodwin, MS, Considine, S., Groden, J., Baron, G, Groden, G, Velicer, WF, Lipsitt, LP, & Hofmann, SH. (2004). Exploring heart rate responses to stereotypical behavior in an individual with autism. Autism and Related Developmental Disabilities Newsletter, 20, 1-4.

  18. Groden, J, Goodwin, MS, Baron, G, Groden, G, Velicer, WF, Lipsitt, LP, Hofmann, SH, & Plummer, B. (2005). Assessing cardiovascular responses to stressors in individuals with autism and other developmental disabilities.  Focus on Autism and Other Developmental Disabilities, 20, 244-252.

  19. Goodwin, M. S., Groden, J., Velicer, W. F., Lipsitt, L. P., Baron, M. G., Hofmann, S. G., & Groden, G. (2006). Cardiovascular arousal in individuals with autism. Focus on Autism and Other Developmental Disabilities, 21, 100-123.

  20. Goodwin, MS, Groden, J, Velicer, WF, & Diller, A.  (2007). Brief Report: Stress Survey Responses in Individuals with Autism.  . Focus on Autism and Other Developmental Disabilities, 22, 00-00.

E. Books and Book Chapters

  1. Humphrey, A.B., Velicer, W. F.,  & Buechner, J.S. (l984).  Factor analysis and cluster analysis of the l980 Census of Rhode Island. Providence, RI: Rhode Island Department of Health.

  2. Humphrey, A.B., Buechner, J.S., & Velicer, W. F. (1985). Geographic differentiation using factor and cluster analysis techniques on the 1980 U.S. Census for Rhode Island. Proceedings of the data use conference on small area statistics.  Washington, DC: U.S. Department of Health and Human Services, pp.179‑186.

  3. (VelicerW. F., contributing author).  (1990).  U.S. Department of Health and Human Services.  The health benefits of smoking cessation.  U.S. Department of Health and Human Service. Public Health Service, Centers for Disease Control, Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health.  DHHS Publication No. (CDC) 90-8416, 1990.

  4. Grimley, D., Prochaska, J.O., VelicerW. F., & Blais, L.M.  (1994). The transtheoretical model of change.  In T. Brinthaupt & R.P. Lipka  (Eds.), Changing the self: Philosophies, technique and experiences.  Albany, NY: SUNY Press, pp. 201-229.

  5. Velicer, W. F., Rossi, J.S., Ruggiero, L., & Prochaska, J.O. (1994). Minimal interventions appropriate for an entire population of smokers. In R. Richmond (Ed.),Interventions for smokers: An international perspective.  Baltimore: Williams & Wilkins, pp. 69-92.

  6. Velicer, W. F. (1994).  Time series models of individual substance abusers.  In R. Brown & W.J. Bukoski (Eds.), Advances in data analysis for prevention intervention research. Washington, D.C.: National Institute on Drug Abuse (NIAA) Technical Review, pp. 264-301.

  7. Rossi, J.S., Rossi, S.R., VelicerW. F., & Prochaska, J.O. (1995). To change or not to change: That is the question.  In D.B. Allison, Handbook of the assessment methods for eating behaviors and weight related problems.  Newbury Park, CA: Sage, pp. 387-430.

  8. Pallonen, U. E., Velicer, W. F., Prochaska, J. O., & Smith, N. F.  (1995).  Feasibility of computer-based smoking interventions among teenagers: Recruitment and treatment retention.  In R.R. Dholakia & D. B. Fortin (ed.), COTIM-95 Proceedings: Living and working in Cyberspace: New information system technologies at home and work.  Newport, RI: COTIM95.

  9. Prokhorov, A.V., Pallonen, U. E., Prochaska, J. O., Alexandrov, A.A., VelicerW. F., & Allard, G.A. (1995)  Readiness to change smoking behavior in different school environments.  In K. Slana (ed.), Tobacco and health.  New York: Plenum Press, pp. 639-642.

  10. Velicer, W. F. & Colby, S. M. (1997). Time series analysis for prevention and treatment research. In K. J. Bryant, M. Windle, & S. G. West (Eds.) The Science of Prevention: Methodological Advances from Alcohol and Substance Abuse Research. Washington, DC: American Psychological Association (pp. 211-249).

  11. VelicerW. F. & Pallonen, U. E. (1998). Expert system interventions for smoking cessation and prevention.  In P. Kolip (ed.) GesundheitlichesRisikoverhalten im Jugenalter: Theoretische Konzeptionen und die Evaluation von Praentionsprogrammen.  Germany: Juventa.

  12. VelicerW. F., Eaton, C.A., & Fava, J.L. (2000). Construct Explication through Factor or Component Analysis: A Review and Evaluation of Alternative Procedures for Determining the Number of Factors or Components.  In Goffin, R. D., & Helmes, E. (Eds.), Problems and Solutions in Human Assessment: Honoring Douglas Jackson at Seventy. Boston: Kluwer. (pp. 41-71).

  13. Redding, CA, Rossi, JS, Rossi, SR, VelicerW. F. & Prochaska, JO. (1999).  Health behavior models.  In Hyner, GC, Peterson, KW, Travis, JW, Dewey, JE, Foerster, JJ, & Framer, EM. (Eds.), SPM Handbook of Health Assessment Tools.  Pittsburgh, PA: The Society of Prospective Medicine & The Institute for Health and Productivity Management.

  14. Keller, S., VelicerW. F., & Prochaska, J. O. (1999) Das Transtheoretische Modell—Eine Ubersicht (The Transtheoretical Model—An Overview).  In S. Keller (Ed.), Motivation zur Verhaltensänderung – Das Transtheoretische Modell in Forschung und Praxis(Motivation for Behavior Change—Research and application of the Transtheoretical Model). Freiburg: Lambertus. (pp. 17-44).

  15. Velicer, W. F., & Keller, S.  (1999). Prognosen für die Zukunft des Transtheoretischen Modells (Predictions for the future of the Transtheoretical Model). In S. Keller (Ed.),Motivation zur Verhaltensänderung – Das Transtheoretische Modell in Forschung und Praxis (Motivation for Behavior Change—Research and application of the Transtheoretical Model). Freiburg: Lambertus. (pp. 229-248).

  16. VelicerW. F., Botelho, R. J., Prochaska, J. O., & Skinner, H. A.  (2001).  Computer systems that motive health behavior change.  In Skinner H. A.,  Promoting Health Through Organizational Change.  San Francisco, CA: Benjamin-Cummings (Chapter 16, pp. 278-292).

  17. Schinka, J., & VelicerW. F. (Eds.)  (2003).  Research Methods in Psychology. Volume 2 of Handbook of Psychology (I. B. Weiner, Editor-in-Chief).  New York: John Wiley & Sons.

  18. VelicerW. F., & Fava, J. L.  (2003).  Time Series Analysis. In J. Schinka & W. F. Velicer (Eds.), Research Methods in Psychology (581-606). Volume 2 of Handbook of Psychology (I. B. Weiner, Editor-in-Chief).  New York: John Wiley & Sons.

  19. Keller, S, & Velicer, W. F. (Eds) (2004). Research on the Transtheoretical Model: Where are we now, where are we going. Pabst: Lengerich

  20. Velicer, W. F.., & Colby, S. M. (2005). Missing Data and the General Transformation Approach to Time Series Analysis. In Maydeu-Olivares, A. & McArdle, J. J. (Eds.),Contemporary Psychometrics. A Festschrift to Roderick P. McDonald (pp. 519-535).Hillsdale, NJ: Lawrence Erlbaum.

  21. Goldberg, L. R., & Velicer, W. F. (2006).  Principles of exploratory factor analysis.  In S. Strack (Ed.), Differentiating normal and abnormal personality:  Second edition.  New York, NY: Springer. (pp. 209-237).

  22. Redding, CA, Velicer, W. F., Evers, KE, & Prochaska, JO. (2007). Preventing Postpartum Relapse: Some New Approaches to Meeting the Challenge. In Hannöver, W, Röske, K, & Thryian, JR, (Eds), Smoking Cessation and Relapse Prevention in Women Post Partum. Lengerich: Pabst (pp. 96-112).


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