Philip W. Wirtz

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Philip W. Wirtz

Professor of Decision Sciences and of Psychological and Brain Sciences


Contact:

Office Phone: (202) 994-6369
2201 G Street NW, Suite 415-G Washington, DC 20052

Philip Wirtz is a professor of decision sciences and of psychological and brain sciences at the George Washington University School of Business. An expert on the analysis of complex human and socio-political structures using advanced multivariate techniques, he also teaches GWSB’s core Ph.D. courses in statistics.

Wirtz has been a member of the GWSB faculty for 28 years. He also served as a visiting professor at Brown University and as a statistical advisor to numerous government and private sector organizations. He is co-creator of Adolescent Drinking Inventory (an instrument for identifying youth who are at a long-term risk for alcohol programs) and is the widely cited author of numerous journal articles and book chapters on complex statistical methodology.

Prior to joining the GWSB faculty, Wirtz was the associate director of the Social Research Group (a GW-based think tank) and executive vice president of Applied Computer Research Associates, Inc.

Wirtz holds a B.A. in psychology from the George Washington University. He earned his master’s degree in computer science from Purdue University and his Ph.D. in applied social psychology from GW. Before assuming the position of vice dean, Wirtz served for many years on the GW Faculty Senate executive committee, and as an elected faculty representative on the search committees for the University’s president and provost. He is the recipient of numerous awards for teaching and service, including the prestigious George Washington Award the Peter B. Vaill Award for Teaching.


  • Peter B. Vaill Excellence in Teaching Award, 2007
  • Oscar and Shoshanna Trachtenberg Prize for Service, 2004
  • Elected to membership in Beta Gamma Sigma, 2004
  • Peter B. Vaill Excellence in Teaching Award, 2005
  • Elected to membership in Sigma Xi, The Scientific Research Society of North America (George Washington University Chapter), 1987
  • George Washington University Award, 1986
  • Statistical Modeling and Analysis
  • Causal Modeling
  • Research Methodology
  • Structural Equation Modeling
  • Hierarchical Linear Modeling
  • Data Mining
  • Ph.D., The George Washington University, 1983
  • M.S., Purdue University, 1975
  • B.A., The George Washington University, 1971
  • Reed, A., Rohrbeck, C., Wirtz, P., & Marceron, J. (2023). Perceived Threat of Disaster, Efficacy, and Psychological Distress Among Individuals with a Physical Disability: A Longitudinal Model. Disaster Medicine and Public Health Preparedness, 17, E559. doi:10.1017/dmp.2023.214.
  • Hagerman, C. J., Stock, M. L., Post, S., Macura, Z., Moore, P. J., Dodge, T., & Wirtz, P. W. (2023). The Effects of Implicit Theories on Body Weight Information Avoidance. Experimental Psychology.
  • Moore, T. J., Wirtz, P. W., Curran, J. N., & Alexander, G. C. (2023). Medical use and combination drug therapy among US adult users of central nervous system stimulants: a cross-sectional analysis. BMJ open, 13(4), e069668.
  • Moore, T. J., Wirtz, P. W., Kruszewski, S. P., & Alexander, G. C. (2021). Changes in medical use of central nervous system stimulants among US adults, 2013 and 2018: a cross-sectional study. BMJ open, 11(8), e048528.
  • Wirtz, P. W., Rohrbeck, C. A., & Burns, K. M. (2019). Anxiety effects on disaster precautionary behaviors: a multi-path cognitive model. Journal of health psychology, 24(10), 1401-1411.  
  • Ryan, M. T., Rohrbeck, C. A., & Wirtz, P. W. (2018). The importance of self-efficacy in parental emergency preparedness: a moderated mediation model. Disaster medicine and public health preparedness, 12(3), 345-351.
  • Wirtz, P. W., & Rohrbeck, C. A. (2018). The dynamic role of perceived threat and self-efficacy in motivating terrorism preparedness behaviors. International journal of disaster risk reduction, 27, 366-372.
  • Wirtz, P. W., & Rohrbeck, C. A. (2017). Efficacy for dealing with terrorism precautionary behavior: Laying the groundwork for communication effectiveness.  Journal of Health Communication, 22(10), 829-838.
  • Wirtz, P. W., & Rohrbeck, C. A. (2017). Social influence and cognitive-motivational effects on terrorism preparedness: A hurdle model. Health Education Journal, 76(4). 385-397.
  • Prasad, K., Wirtz, P. W., & Yu, L. (2014). Measuring hotel guest satisfaction by using an online quality management system. Journal of Hospitality Marketing & Management, 23(4), 445-463.          
  • Gajewski, D.A., Philbeck, J.W., Wirtz, P.W., & Chichka, D. (2014)  Angular Declination and the Dynamic Perception of Egocentric Distance.  Journal of Experimental Psychology: Human Perception and Performance, 40(1), 361-377.
  • Woods, A.J., Philbeck, J.W., Wirtz, P. (2013)  Hyper-arousal decreases human visual thresholds. PLoS ONE, 8(4), e61415. doi: 10.1371/journal.pone.0061415. PMID: 23593478.
  • Basford, T.E., Offermann, L.R., & Wirtz, P.W. (2012).  Considering the source:  The impact of leadership level on follower motivation and intent to stay.  Journal of Leadership and Organizational Studies, 19(2), 202-214.
  • Cohen-Mansfield, J., & Wirtz, P.W. (2011).  Predictors of entry to the nursing home: Does length of follow-up matter?  Archives of Geriatrics and Gerontology, 53(3), 309-315.
  • Longabaugh, R., Wirtz, P.W., Zywiak, W.H., & O'Malley, S. (2010).  Network support as a prognostic indicator of drinking outcomes: the COMBINE study.  Journal of Studies on Alcohol and Drugs, 71, 837-846.
  • Longabaugh, R., Wirtz, P.W., Gulliver, S.B., & Davidson, D. (2009).  Extended naltrexone and broad spectrum treatment or motivational enhancement treatment. Psychopharmacology, 206(3), 367-376.
  • Cohen-Mansfield, J. & Wirtz, P.W. (2009).  The reasons for nursing home entry in an adult day care population: caregiver reports versus regression results.  Journal of Geriatric Psychiatry and Neurology, 22(4), 274-281.
  • Stein, L.A.R. Minugh, P. A., Longabaugh, R., Wirtz, P., Baird, J., Nirenberg, T.D., Woolard, R.F., Carty, K., Lee, C., Mello, M., Becker, B., & Gogineni, A. (2009).  Readiness to change as a mediator of the effect of a brief Motivational Intervention on post-treatment alcohol related consequences of injured Emergency Department hazardous drinkers.  Psychology of Addictive Behaviors, 23(2), 185-195.
  • Wirtz, P.W. (2007).  Advances in causal chain development and testing in alcohol research:  Mediation, suppression, moderation, mediated moderation and moderated mediation.  Alcoholism:  Clinical and Experimental Research, 31(S3), 57S-63S.
  • Cohen-Mansfield, J., & Wirtz, P.W. (2007).  Characteristics of Adult Day-Care Participants Who Enter a Nursing Home.  Psychology and Aging, 22(2), 354-360.
  • Davidson, D., Gulliver, S.B., Longabaugh, R., Wirtz, P.W., & Swift, R. (2006).  Building better CBT: Is broad spectrum treatment more effective than motivational enhancement therapy for alcohol dependent patients treated with naltrexone? Journal of Studies on Alcohol and Drugs, 68(2), 238-247.
  • Wirtz, P.W. (2005).  Modeling developmental change over time: Latent growth analysis. In D. Teti (ed.), Handbook of Research Methods in Developmental Psychology.  Malden, MA: Blackwell.
  • Woolard, R.H., Carty, K., Wirtz, P., Longabaugh, R., Niremberg, T.D., Minugh, P.A., Becker, B., & Clifford, P.R. (2004). Research fundamentals: Follow-up of subjects in clinical trials: Addressing subject attrition.  Academic Emergency Medicine, 11(8), 859-866.
  • Sigelman, C.K., Rinehart, C.S., Sorongon, A.G., Bridges, L.J., & Wirtz, P.W. (2004). Teaching a coherent theory of drug action to elementary school children.  Health Education Research, 19(5), 501-513.
  • Newcomer, K.E., & Wirtz, P.W. (2004).  Using statistics in evaluation. In J.S. Wholey, H.P. Hatry, & K.E. Newcomer (eds.), Handbook of Practical Program Evaluation (second edition). San Francisco: Jossey Bass.
  • Sigelman, C.K., Bridges, L.J., Sorongon, A.G., Rinehart, C.S., Brewster, A.G., & Wirtz, P.W. (2003).  Biological background knowledge and learning from a drug and alcohol education program. Journal of Genetic Psychology, 164(2), 133-152.
  • Sigelman, C.K., Bridges, L.J., Leach, D.B., Mack, K. L., Rinehart, C. S., Sorongon, A.G., Brewster, A.B., & Wirtz, P.W. (2003). The efficacy of an education program to teach children a scientific theory of how drugs affect behavior. Journal of Applied Developmental Psychology, 24(5), 573-594.
  • Longabaugh, R., & Wirtz, P.W. (2003).  AProject Match hypotheses@: What this monograph aims to achieve [Letter to the editor].  Addiction, 98(4), 535-536.
  • Zywiak, W.H., Longabaugh, R., & Wirtz, P.W. (2002).  Decomposing the relationships between pretreatment social network characteristics and alcohol treatment outcome.   Journal of Studies on Alcohol, 63(1), 114-121.
  • Longabaugh, R., & Wirtz, P.W. (Eds.) (2001).  Project MATCH:  Hypotheses, Results, and Causal Chain Analysis.  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Wirtz, P.W., & Longabaugh, R. (2001).  Methodological assessment and critique. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 296-304).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., Wirtz, P.W., & Rice, C. (2001).  Social functioning.  In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 285-294).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., & Wirtz, P.W. (2001).  Network support for drinking. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 260-275).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., & Wirtz, P.W. (2001).  Purpose of the monograph. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 1-3).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., & Wirtz, P.W. (2001).  Matching hypotheses. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 4-17).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., & Wirtz, P.W. (2001).  Causal chain analysis. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 18-28).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Longabaugh, R., & Wirtz, P.W. (2001).  Hypotheses, results, and causal chain analysis. In R. Longabaugh and P.W. Wirtz (Eds.), Project MATCH:  Hypotheses Results, and Causal Chain Analysis (p. 305-).  NIAAA Project MATCH Monograph Series (Vol. 8).  Washington:  Government Printing Office.
  • Rychtarik, R.G., Connors, G.J., Whitney, R.B., McGillicuddy, N.B., Fitterling, J.M., & Wirtz, P.W. (2000). Treatment settings for persons with alcoholism:  Evidence for matching clients to inpatient versus outpatient care. Journal of Consulting and Clinical Psychology, 68(2), 277‑289.
  • Project MATCH Research Group (1999). A study to remember:  Response of the Project MATCH Research Group.  Addiction, 94(1), 66-69.
  • Longabaugh, R., Wirtz, P.W., Zweben, Z., & Stout, R.L. (1998).  Network support for drinking, alcoholics anonymous and long-term matching effects.  Addiction, 93(9), 1313-1333.
  • Project MATCH Research Group (1998).  Matching patients with alcohol disorders to treatments:  Clinical implications from Project MATCH.  Journal of Mental Health, 7(6), 589-602.
  • Project MATCH Research Group (1998).  Matching alcoholism treatment to client heterogeneity:  Project MATCH Three-Year Drinking Outcomes.  Alcoholism: Clinical and Experimental Research, 22(6), 1300-1311.
  • Project MATCH Research Group (1998).  Therapist effects in three treatments for alcohol problems.  Psychotherapy Research, 8(4), 455-474.
  • Project MATCH Research Group (1998).  Matching alcoholism treatment to client heterogeneity:  Treatment main effects and matching effects on drinking during treatment  Journal of Studies on Alcohol, 59, 631-639.
  • Carroll, K.M., Connors, G.J., DiClemente, C.C., Donovan, D.M., Longabaugh, R.L., Kadden, R.M., Rounsaville, B.J., Wirtz. P.W., & Zweben, A. (1998). Internal validity of Project MATCH treatments: Discriminability and integrity. Journal of Consulting and Clinical Psychology, 66(2), 290-303.
  • Project Match Research Group (1997).  Project MATCH secondary a priori hypotheses. Addiction, 92(12), 1671-1698.
  • McKay, J.R., Cacciola, J.S., McLellan, A.T., Alterman, A.I., & Wirtz, P.W. (1997).  An initial evaluation of the psychosocial dimensions of the American Society of Medicine Criteria for Inpatient versus Intensive Outpatient Substance Abuse Rehabilitation. Journal of Studies on Alcohol, 58, 239-252.
  • Project Match Research Group (1997). Matching Alcoholism Treatments to Client Heterogeneity:  Project MATCH Posttreatment Drinking Outcomes.  Journal of Studies on Alcohol, 58, 7-29.
  • Wirtz, P.W. (1995).  Online remote computer access.  In Liebowitz, J. (ed.), Advances in Telematics, Volume 3.  Norwood, NJ:  Ablex Publications.
  • Weissberg-Benchell, J., Glasgow, A.M., Tynan, W.D., Wirtz, P.W., Turek, J., & Ward, J. (1995).  Adolescent diabetes management and mismanagement.  Diabetes Care, 18(1), 77-82.
  • Del Boca, F.K., Babor, T.F., McRee, B. & Wirtz, P.W. (1995).  Assessment of reliability in multisite clinical research:  An empirical assessment of four interviews at nine sites.
  • Wirtz, P.W., Carbonari, J., Muenz, L., Stout, R., Tonigan, S., & Connors, G. (1994).  Classical analytical methods for detecting matching effects on treatment outcome.  Journal of Studies on Alcohol, Supplement No. 12, December, 1994, 76-82.
  • Stout, R.L., Wirtz, P.W., Carbonari, J., & Del Boca, F.K.  (1994).  Ensuring balanced distribution of prognostic factors in treatment outcome research.  Journal of Studies on Alcohol, Supplement No. 12, December, 1994, 70-75.
  • Carbonari, J.P., Wirtz, P.W., Muenz, L., & Stout, R. (1994)  Alternative analytical methods for detecting matching effects on treatment outcome.  Journal of Studies on Alcohol, Supplement No. 12, December, 1994, 83-90.
  • Longabaugh, R., Wirtz, P.W., DiClemente, C.C., & Litt, M.D. (1994).  Issues in the development of client-treatment matching hypotheses.  Journal of Studies on Alcohol, Supplement No. 12, December, 1994, 46-59.
  • Longabaugh, R., Wirtz, P.W., Beattie, M., Noel, N., & Stout, R. (1994).  Matching treatment focus to patient social investment and support:  18 month follow-up results.  Journal of Consulting and Clinical Psychology, 63(2), 296-307.
  • Carroll, K.M., Rounsaville, B.J., Nich, C., Gordon, L.T., Wirtz, P.W., & Gawin, F. (1993).  One year follow-up of psychotherapy and pharmacotherapy for cocaine dependence:  Delayed emergence of psychotherapy effects. Archives of General Psychiatry, 51(12), 989-997.
  • Project Match Research Group (1993).  Project MATCH:  Rationale and methods for a multisite clinical trial matching alcoholism patients to treatment.  Alcoholism:  Clinical and Experimental Research, 17(6), 1130-1145.
  • Offermann, L.R., Kennedy, J.K., Jr., & Wirtz, P.W. (1994).  Implicit leadership theories:  Content, structure, and generalizability.  Leadership Quarterly, 5(1), 43-58.
  • Schwartz, R.H., & Wirtz, P.W. (1990).  Potential substance abuse detection among adolescent patients:  Using the Drug and Alcohol Problem (DAP) Quick Screen, a 30-item questionnaire.  Clinical Pediatrics, 29(1), 38-43.
  • Wirtz, P.W., & Charner, I. (1989).  Premature retirement:  Does a positive attitude ensure a successful transition?  (Working Paper No. 1989-3).  Washington, DC:  The George Washington University, Graduate Institute for Policy Education and Research.
  • Harrell, A.V., & Wirtz, P.W. (1989).  Screening for adolescent problem drinking:  Validation of a multidimensional instrument for case identification.  Psychological Assessment: A Journal of Consulting and Clinical Psychology, 1, 61-63.
  • Harrell, A.V., & Wirtz, P.W. (1989).  Manual for the Adolescent Drinking Inventory:  Drinking and You.  Washington, DC:  ISA Associates.
  • Rohrbeck, C.A., & Wirtz, P.W. (1989).  Intense employment while in high school:  Are teachers, guidance counselors, and parents misguiding academically-oriented adolescents?  (Report No. to be issued).  Washington, DC:  George Washington University, Department of Psychology (ERIC Document Reproduction Service No. to be issued).
  • Wirtz, P.W., & Charner, I. (1989).  Motivations for educational participation by retirees:  The expressive-instrumental continuum revisited.  Educational Gerontology, 15, 275-284.
  • Wirtz, P.W., Rohrbeck, C.A., Charner, I., & Fraser, B.S. (1988).  Situational and social influences on high school students' decisions to work part-time.  Washington, DC:  The George Washington University. (ERIC Document Reproduction Service No. ED 299 389)
  • Wirtz, P.W., Rohrbeck, C.A., Charner, I., & Fraser, B.S. (1988).  Employment of adolescents while in high school:  Employment intensity, interference with schoolwork, and normative approval.  Journal of Adolescent Research, 3, 97-105.
  • Wirtz, P.W., & Harrell, A.V. (1987).  Victim and crime characteristics, coping responses, and short- and long-term recovery from victimization.  Journal of Consulting and Clinical Psychology, 55(6), 866-871.
  • Wirtz, P.W., & Harrell, A.V. (1987).  The effects of threatening versus non-threatening prior life events on short and long term fear levels of rape victims.  Violence and Victims, 2(2), 89-98.
  • Wirtz, P.W., & Harrell, A.V. (1987). Psychological response to physical vs. non‑physical assault: A profile analysis. Journal of Interpersonal Violence, 2(3), 264-277.
  • Wirtz, P.W., Rohrbeck, C.A., Charner, I., & Fraser, B.S. (1987).  Intense employment while in high school:  Are teachers, guidance counselors, and parents misguiding academically-oriented adolescents?  (Working Paper No. 1987-4).  Washington, DC:  The George Washington University, Graduate Institute for Policy Education and Research.
  • Adams, A.V., Mangum, S.L., & Wirtz, P.W. (1987).  Postschool education and training:  Accessible to all?  The Review of Black Political Economy, 15(3), 68-86.
  • Wirtz, P.W., & Harrell, A.V. (1987).  Police and victims of non‑domestic physical assault.  Criminal Justice and Behavior, 14, 81-92.
  • Wirtz, P.W., & Harrell, A.V. (1987). Effects of post‑assault exposure to attack similar stimuli on long‑term recovery of victims.  Journal of Consulting and Clinical Psychology, 55, 10-16.
  • Rebok, G.W., Offermann, L.R., Wirtz, P.W., & Montaglione, C.J. (1986). Work and intellectual aging:  The psychological concomitants of social‑organizational conditions. Educational Gerontology, 12, 359-374.
  • Harrell, A.V., & Wirtz, P.W. (1985). The adolescent drinking index professional manual.  Odessa, FL:  Psychological Assessment Resources.
  • Miller, J.D., Cisin, I.H., Gardner-Keaton, H., Harrell, A.V., Wirtz, P.W., Abelson, H.I., & Fishburne, P.M. (1983).  National Survey on Drug Abuse:  Main Findings 1982.  DHHS Pub. No. (ADM) 83-1263.  Washington, DC: U.S. Government Printing Office.
  • Harrell, A.V., & Wirtz, P.W. (1982).  Developmental sequences in illicit drug use.  Paper to be published in a National Institute on Drug Abuse monograph.
  • Adams, A.V., Goldstein, H., Harrell, A.V., Mangum, S.L., & Wirtz, P.W. (1982).  The Neglected Source of Human Wealth:  A Study of Formal Education and Training During the Adult Years.  Final report prepared for the U.S. Department of Labor Employment and Training Administration Office of Research Development, Washington, D.C.
  • Senftle, F.E., & Wirtz, P.W. (1967).  An investigation of extraterrestrial tektites.  Washington, DC:  National Bureau of Standards.
  • Statistical Modeling and Analysis
  • Advanced Statistical Modeling and Analysis
  • Exploratory and Multivariate Data Analysis
  • Special Topics in Research Methods
  • Judgment, Uncertainty, and Decisions
  • Data Analysis and Decisions
  • Financial Modeling and Econometrics
  • Mathematics and Statistics for Management
  • First-Year Development Course

Methodological Advisor

  • COMBINE Study, National Institute on Alcohol Abuse and Alcoholism: Consultant to Principal Investigator Richard Longabaugh at the Brown University site.
  • National Institute on Alcohol Abuse and Alcoholism:  Methodological Advisor for “Project MATCH” nationwide multi-site clinical treatment matching study
  • United States General Accounting Office:  Methodological Advisor and Instructor for senior executive design/data analysis seminars

Study Panel Membership

  • ALCP 1/AA3:  National Institute on Alcohol Abuse and Alcoholism
  • Special Emphasis Panel:  National Institute on Alcohol Abuse and Alcoholism (July 9, 1996)
  • Scientific Review and Evaluation Board (Large Grants):  Veterans Administration
  • Scientific Review and Evaluation Board (Research Career Scientist):  Veterans Administration
  • Special Review Panel on VA Cooperative Studies in Health Services:  Evaluation of a Computer-Assisted Neuropsychological Screening Battery (April 22, 1996 and October 29, 1996)
  • Special Review Committee on Alcohol Research Center Grants:  National Institute on Alcohol Abuse and Alcoholism

Reviewer:  Refereed Journals

  • Academy of Management Learning & Education
  • Addiction
  • Alcohol Health & Research World
  • Journal of the Addictions
  • Journal of Consulting and Clinical Psychology (Editorial Board: 1988-1990)
  • Journal of Social and Clinical Psychology
  • Journal of Studies on Alcohol
  • Psychological Bulletin
  • Journal of Mathematical Psychology

Advisory Panels

  • Scientific Advisory Council, Oklahoma Center for Alcohol & Drug Related Studies
  • Reviewer:  Refereed Professional Books
  • John Wiley & Sons, Inc.: Applied Multivariate Analysis