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Leona Aiken

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President's Professor
Faculty, TEMPE Campus, Mailcode 1104
Professor
Faculty, TEMPE Campus, Mailcode 1104
Biography

President's Professor and Area Head, Quantitative, Department of Psychology (Social, Quantitative), College of Liberal Arts and Sciences
 

Education

PhD, Purdue University, 1970

Research Interests

Aiken's research interests include both quantitative methods and health psychology. In quantitative methods she is interested in continuous variable interactions in multiple regression. She is also interested in the use of design approaches and mediational analysis to untangle the effects of individual components in multi-component interventions. In health psychology, Aiken is interested in adoption of health protective behaviors across the life span, particularly among women, both from the perspectives of psychosocial models of the putative determinants of health protective behavior and from the perspective of interventions to increase health protective behavior. She has studied mammography screening, condom use, sun protection, and the adoption of hormone replacement therapy.

Health psychology research projects: Determinants of perceived susceptibility to diseases of aging, post-decisional processes following the adoption of hormone replacement therapy, strategies for piercing perceptions of invulnerability to disease, understanding of osteoporosis risk and osteoporosis protective health practices among young women, determinants of use of sun protection against skin cancer among young adult males.

Quantitative psychology research projects: Analysis of coarsely categorized outcome variables in multiple regression

Publications
  • Ranby*, K. W., Aiken, L. S., Gerend, M.A*., & Erchull, M.J*. (2010). Perceived susceptibility measures are not Interchangeable: Absolute, direct comparative and indirect comparative risk clarified. Health Psychology (2010).
  • Reuter, T*., Ziegelmann, J. P., Wiedermann*, A. U., Lippke, S. , Schuz, B., & Aiken, L. S. (2010). Planning bridges the intention-behavior gap: Age makes a difference and strategy use explains why. Psychology and Health (2010).
  • Reid, A.E.*, Cialdini, R. B. ., & Aiken, L. S. Social norms and health behavior. Handbook of Behavioral Medicine: Methods and Application (2010).
  • Coxe*, S., West, S. G., & Aiken, L. S. (2009). The analysis of count data. Journal of Personality Assessment. The analysis of count data. Journal of Personality Assessment (2009).
  • Ranby*, K.W., Aiken, L.S., MacKinnon, D. P., Elliot, D.L., Moe, E.L., McGinnis, W., Goldberg, L. (2009). A Mediation Analysis of the ATHENA Intervention for Female Athletes: Prevention of Athletic-Enhancing Substance Use and Unhealthy Weight Loss Behaviors. Journal of Pediatric Psychology (2009).
  • Aiken, L.S., West, S. G., & Millsap, R. E. Improved training in methodology enriches the science of psychology. (2009).
  • Aiken, L. S., West, S. G., & Millsap, R. E. Doctoral Training in Statistics, Measurement, and Methodology in Psychology: Replication and Extension of the Aiken, West, Sechrest, and Reno (1990) Survey of Ph.D. programs in North America. American Psychologist (2008).
  • Aiken, L. S,. West, S. G., & Taylor, A. B. Correlation methods/Regression Methods. Handbook of Research Methods in Abnormal and Clinical Psychology (2008).
  • Sarah Schmiege*, Leona Aiken, Jennifer Sander*, Mary Gerend*. Osteoporosis prevention among young women: Psychological models of calcium consumption and weight-bearing exercise. Health Psychology (2007).
  • West, S. G., Aiken, L. S. , Taylor, A. B., & Wu, W. Multiple regression: Application of the basics and beyond in personality research. Handbook of research methods in personality psychology (2007).
  • A Taylor, S West, Leona Aiken. Loss of power in logistic, ordinal logistics, and probit regression when an outcome is coarsely categorized. Educational and Psychological Measurement (2006).
  • K Jackson, Leona Aiken. Evaluation of a multi-component appearance-based sun-protective intervention for young women: Uncovering the mechanisms of program efficacy. Health Psychology (2006).
  • L Reuhlman, P Karoly, Leona Aiken, M Todd, C Newton. Evaluating chronic pain impact among patients in primary care: Further validation of a brief assessment instrument. Pain Medicine (2006).
  • Leona Aiken, J Butner, C Lockhart, B Volk-Craft, G Hamilton, F Williams. Outcome Evaluation of a Randomized Trial of the PhoenixCare Intervention: Program of Case Management and Coordinated Care for the Seriously Chronically Ill. Journal of Palliative Medicine (2006).
  • M Gerend, Leona Aiken, M Erchull, M Lapin, J Mindy. Women's Use of Hormone Therapy Before and After the Women's Health Initiative: A Psychosocial Model of Stability and Change. Preventive Medicine (2006).
  • M Gerend, M Erchull, Leona Aiken, J Maner. Reasons and risk: Factors underlying women's perceptions of susceptibility to osteoporosis. Maturitas (2006).
  • Aiken, Leona S, West, S G. Interaction Effects. Encyclopedia of Statistics in Behavioral Science (2005).
  • West, S G, Aiken, Leona S. Multiple Linear Regression. Encyclopedia of Statistics in Behavioral Science (2005).
  • L Reuhlman, P Karoly, C Newton, Leona Aiken. The development and preliminary validation of the profile of chronic pain: extended assessment battery. Pain (2005).
  • L Ruehlman, Paul Karoly, C Newton, Leona Aiken. The development and preliminary validation of a brief measure of chronic pain impact for use in the general population. Pain (2005).
  • Aiken, Leona S. Multiple Correlation. Encyclopedia of Social Science Research Methods (2004).
  • Aiken, Leona S. Multiple Regression. Encyclopedia of Social Science Research Methods (2004).
  • A Bryan, Leona Aiken, S West. HVI/STD risk among incarcerated adolescents: Optimism about the future and self-esteem as predictors of condom use self-efficacy. Journal of Applied Social Psychology (2004).
  • B Ellis, E Shannon, J Cox, Leona Aiken, B Fowler. Chronic conditions: Results of the Medicare Health Outcomes Survey. Health Care Financing Review (2004).
  • M Gerend, Leona Aiken, S West. Beyond medical risk: Investigating the psychological factors underlying women's perceptions of susceptibility to breast cancer, heart disease, and osteoporosis. Health Psychology (2004).
  • M Gerend, Leona Aiken, Stephen West. Personality factors in older women's perceived susceptibility to diseases of aging. Journal of Personality (2004).
  • Aiken, Leona S. Interaction Effect. Encyclopedia of Social Science Research Methods (2003).
  • Aiken, Leona S. Multiple Regression Analysis. Encyclopedia of Social Science Research Methods (2003).
  • C Lockhart, B Volk-Craft, G Hamilton, Leona Aiken, F Williams. The PhoenixCare Program. Journal of Palliative Medicine (2003).
  • Cohen, J, Cohen, P, West, S G, Aiken, Leona S. Applied Multiple Regression/Correlation Analysis for the Behavior Sciences. (2003).
  • Cohen, J, Cohen, P, West, S, Aiken, Leona S. Applied multiple regression/correlation analysis for the behavioral sciences. (2003).
  • Aiken, Leona S (Author) ,West, S G (Author) ,Pitts, S C (Author) . Multiple Linear Regression. Comprehensive Handbook of Psychology (2003).
  • D Huebner, Mary Davis, C Nemeroff, Leona Aiken. The impact of internalized homophobia on HIV preventive interventions. American Journal of Community Psychology (2002).
  • A Bryan, M Schindeldecker, Leona Aiken. Sexual self control and male condom use outcome beliefs: Predicting heterosexual men's condom use intentions and behavior. Journal of Applied Social Psychology (2001).
  • D Chambless, A Bryan, Leona Aiken, G Steketee, J Hooley. Prediction of expressed emotion via path analysis: A study with families of obsessive-compulsive and agoraphobic outpatients. Journal of Family Psychology (2001).
  • Aiken, Leona S (Author) ,Gerend, M A (Author) ,Jackson, K M (Author) . Subjective risk and health protective behavior: Cancer screening and cancer prevention. Handbook of Health Psychology (2001).
  • Aiken, Leona S, West, S G. Multiple regression. Encyclopedia of Psychology (2000).
  • D Formoso, N Gonzales, Leona Aiken. Family conflict and children's externalizing and internalizing behaviors: Protective factors. American Journal of Community Psychology (2000).
  • K Jackson, Leona Aiken. A psychosocial model of sun-protection and sunbathing in young women: The impact of health beliefs, attitudes, norms, and self-efficacy for sun-protection. Health Psychology (2000).
  • Leona Aiken, K Jackson, Felipe Castro, V Pero. Mediators of the linkage from acculturation to mammography screening compliance among urban Hispanic women. Women and Cancer (2000).
Research Activity
Fall 2017
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
Spring 2017
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 531Multiple Regression/Psych Res
Fall 2016
Course NumberCourse Title
PSY 330Statistical Methods
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 532Analysis of Multivariate Data
Spring 2016
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 531Multiple Regression/Psych Res
Fall 2015
Course NumberCourse Title
PSY 330Statistical Methods
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 532Analysis of Multivariate Data
Spring 2015
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
Fall 2014
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 531Multiple Regression/Psych Res
PSY 532Analysis of Multivariate Data
Spring 2014
Course NumberCourse Title
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 531Multiple Regression/Psych Res
Fall 2013
Course NumberCourse Title
PSY 330Statistical Methods
PSY 399Supervised Research
PSY 499Individualized Instruction
PSY 532Analysis of Multivariate Data
Spring 2013
Course NumberCourse Title
PGS 399Supervised Research
PSY 499Individualized Instruction
PSY 531Multiple Regression/Psych Res
Presentations
  • Moser, S.E., Shiota, M.N., & Aiken, L.S. Physiological responses to images of damaging effects of the sun. Society for Psychophysiological Research, Portland. OR (Oct 2010).
  • Aiken, L.S., & Ranby,*K.W. The measurement of perceived risk: Quantitative, social, cognitive, and health perspectives. American Psychological Association, San Diego, CA., August, 2010 (Aug 2010).
  • Aiken, L.S. Testing and interpreting interactions with novel forms of psychological data. Distinguished alumna colloquium. Purdue University, West Lafayette, IN, March 26, 2010 (Mar 2010).
  • Aiken, L. S. The interplay between social psychology and health behavior theory. Uncovering how interventions enhance health protective behavior. Society for Personality and Social Psychology, Las Vegas, NV (Jan 2010).
  • Reid*, A. E., & Aiken, L. S. Characterizations of Descriptive and Subjective Norm in the Theory of Planned Behavior: Independent or Combined?. Society for Personality and Social Psychology, Las Vegas, NV (Jan 2010).
  • Moser*, S.E., Aiken, L. S., & Shiota, M. N. Experienced and anticipated emotion in decision-making: How you feel when considering a behavior influences how you think you will feel with the outcome. Society for Personality and Social Psychology, Las Vegas, NV (Jan 2010).
  • Aiken, L. S., & West, S. G. Statistical mediation and moderation analysis: How and for whom do interventions work. American Psychological Association, Toronto, Ontario, CA, August 7, 2009. Statistical mediation and moderation analysis: How and for whom do interventions work. American Psychological Association Convention, Toronto, Ontario, CA, August 7, 2009 (Aug 2009).
  • West, S. G. & Aiken, L. S. (2009). (Lecture by West; computer graphics in SPSS by Aiken). Western Psychological Association. Portland, OR, April 26, 2009. Seeing your data: Exploring and visualizing relationships. Western Psychological Association. Portland, OR, April 26, 2009 (Apr 2009).
  • Ranby*, K. W., & Aiken, L. S. What makes young adults feel vulnerable to realistic negative events. What makes young adults feel vulnerable to realistic negative events. Society for Personality and Social Psychology, Tampa, FL (Feb 2009).
  • Moser*, S. E., Shiota, M. N., & Aiken, L. S. The role of conflicting anticipated emotions in behavior: A mediation analysis approach. Society for Personality and Social Psychology, Tampa, Florida, February, 2009 (Feb 2009).
  • Reid,* A. E., & Aiken, L. S. Comparison of five models of health behavior: Common strengths and unique contributions to understanding condom use. Society for Personality and Social Psychology, Tampa, Florida, February, 2009 (Feb 2009).
  • Aiken, L. S., & West, S. G. Mediation and moderation of outcomes in health behavior change research: Will our data ever be good enough?. In Expert Workshop: Issues in Health Behavior Change. Free University, Berlin (Jul 2008).
  • Aiken, L. S. Sun Protection versus Sunbathing: Additional positive effects of intervening on one aspect of a risk behavior. Symposium paper. International Congress of Psychology, Berlin, Germany (Jul 2008).
  • Aiken, L. S. An Introduction to Multilevel Modeling. Statistics workshop. Free University, Berlin, Germany. Free University Berlin, Germany, Statistics Workshop (Jun 2008).
  • Aiken, L. S. Multilevel Modeling, an introduction. Statistics workshop. Statistics workshop presented at Western Psychological Association, Irvine, CA,. Western Psychological Association (Apr 2008).
  • Aiken, Leona. From psychosocial model to intervention: Uncovering mechanisms underlying adoption of health protective behavior. Invited address to National Cancer Institute, Conference on Stimulating Advances in Behavioral Theory: Application to Cancer Screening Workshop (Dec 2006).
  • Aiken, Leona, Panter, A, Boodoo, G. APA Task Force to increase the number of quantitative psychologists. Paper presented at the Society for Multivariate Experimental Psychology (Oct 2006).
  • Aiken, Leona, West, S. Graduate Training in Quantitative Psychology: A decade of stability and change. Invited address, American Psychological Association (Aug 2006).
  • Aiken, Leona, West, S. Quantitative training in psychology: a decade of stability and change. Invited paper presented at American Psychological Association (Aug 2006).
  • Aiken, Leona. Ballet and Statistics, Beautiful Forms, Art and Science. Psychologist as artist; artist as psychologist. American Psychological Association (Aug 2006).
  • West, S, Aiken, Leona. Testing and Interpreting Interactions with novel forms of psychological data. Society for Multivariate Analysis in the Behavioral Sciences and European Association of Methodology (Jul 2006).
  • Wilke, K, Gerend, M, Aiken, Leona, Erchull, M. Perceived risk correlates: It all depends on risk measurement strategy. Poster presented at Western Psychological Association (Apr 2006).
  • Moser, S, Erchull, M, Wilke, K, Reid, A, Aiken, Leona. Taking medication when risks exceed benefits: post menopausal hormone therapy. Poster presented at Western Psychological Association (Apr 2006).
  • Reid, A, Moser, S, Erchull, M, Aiken, Leona, Wilke, K. Pharmaceutical versus natural dietary supplements: Women's use and evaluation. Poster presented at Western Psychological Association (Apr 2006).
  • Aiken, Leona. Multilevel regression models. Statistics workshop presented at Western Psychological Association (Apr 2006).
  • Wu, W, West, S, Aiken, Leona, Caselli, R, Santerre-Lemmon, L, Merkley, T, Chen, K, Reiman, E, Alexander, G. Effect of APOE 4 on longitudinal rates of change of verbal memory performance in cognitively normal adults. Paper presented at the Society for Neuroscience Annual Meeting (Nov 2005).
  • Taylor, A, West, S, Aiken, Leona. Effects on power of coarsely categorizing an outcome variable. Poster presented at the American Psychological Association (Aug 2005).
  • Wu, W, West, S, Aiken, Leona, Caselli, R, Santerre-Lemmon, L, Merkley, T, Chen, K, Reiman, E, Alexander, G. Effect of APOE 4 on longitudinal rates of change of verbal memory performance in cognitively normal adults. Presented to the ESAC/ARC Alzheimer Annual Meeting (Apr 2005).
  • Aiken, Leona. Interactions in multiple regression. Statistics workshop presented at Western Psychological Association (Apr 2005).
  • Erchull, M, Duran, J, Aiken, Leona. Confronting the risks of medication: The case of hormone therapy. Poster presented at Western Psychological Association (Apr 2005).
  • Aiken, Leona, West, S. Extending multiple regression analysis to novel forms of psychological data. Invited Master Lecture, American Psychological Association (Jul 2004).
  • Gerend, M, Aiken, Leona, Lapin, A, Erchull, M. What sustains prevention behavior? Understanding women's long-term hormone therapy use. Poster presented at American Psychological Association (Jul 2004).
  • Schmiege, S, Aiken, Leona, Sander, J. Osteoporosis protection in young women: Models of weight-bearing exercise. Poster presented at Western Psychological Association (Apr 2004).
  • Erchull, M, Aiken, Leona. Unraveling women's perception of choice to initiate hormone therapy. Poster presented at Western Psychological Association (Apr 2004).
  • Erchull, M, Aiken, Leona. Women's Health Initiative Findings and Women's Use of Hormone Therapy. Poster presented at Western Psychological Association (Apr 2004).
  • West, S, Aiken, Leona, Kwok, O. Hierarchical and generalized linear models: What multiple regression didn't tell us. Invited address, American Psychological Association (Aug 2003).
  • Schmiege, S, Sander, S, Aiken, Leona. Young women and osteoporosis: A psychosocial model of calcium consumption. Poster presented at Western Psychological Association (Apr 2003).
  • Aiken, Leona, Taylor, A. Multiple regression with funny dependent variables: Categories, ordered categories, counts. Statistics workshop presented at Western Psychological Association (Apr 2003).
  • Patock-Peckham, J, Cialdini, R, Sagarin, B, Gerend, M, Aiken, Leona. Piercing the illusion of invulnerability to STD risk. Poster presented at Western Psychological Association (Apr 2003).
  • Rheulman, L, Karoly, P, Newton, C, Aiken, Leona, Todd, M, Fairholmn, C. Development of the Chronic Pain Screen. Poster Presentation American Psychosomatic Society, 61st Annual Scientific Meeting (Mar 2003).
  • Aiken, Leona. Understanding how multi-component interventions work to increase health protective behavior: combining research design and mediational analysis. Invited address, University of California, Department of Psychology (Dec 2002).
  • Aiken, Leona. Understanding how multi-component interventions work to increase health protective behavior: combining research design and mediational analysis. Invited address, University of Southern California, Department of Psychology (Nov 2002).
  • Erchull, M, Aiken, Leona, West, S. Hormone replacement therapy (HRT) decisions and post-decisional HRT outcomes. American Psychological Association (Aug 2002).
  • Aiken, Leona. Traditional teaching works in quantitative psychology. American Psychological Association (Aug 2002).
  • Aiken, Leona. Understanding how health protective behavioral interventions work: combining research design and mediational analysis. Presidential Address, Western Psychological Association (Apr 2002).
  • Erchull, M, Aiken, Leona. Post-decisional processes following initial adoption of hormone replacement therapy. Western Psychological Association (Apr 2002).
  • Burke, H, Aiken, Leona, Saunders, A, Pietrini, P, Ricciardi, E, Reiman, E, Rapoport, S, Schapiro, M, Alexander, G. Effect of age and apolipoprotein E e4 on longitudinal cognitive decline in down syndrome. Paper presented at Society for Neuroscience (Nov 2001).
  • Gerend, M, Aiken, Leona, West, S. Personality influences older women's perceived susceptibility to diseases of aging. Poster presented at American Psychological Association (Aug 2001).
  • Aiken, Leona. Methodological Training for Ph.D. Psychologists: Current Status, Needs, Potential Mechanisms. Symposium Chair, American Psychological Association (Aug 2001).
  • Aiken, Leona. Statistics, Measurement, and Methods Training: Survey of 201 Ph.D. Programs. Paper presented at American Psychological Association (Aug 2001).
  • Patock-Peckhan, J, Cialdini, R, Newton, C, Gerend, M, Aiken, Leona, Sagarin, B. An alcohol expectancy intervention for drinking and driving: puncturing the illusion of invulnerability. Poster presented to Research Society on Alcoholism (Jun 2001).
  • Aiken, Leona. Multiple regression with funny dependent variables: Categories, Ordered Categories, and Counts. Distinguished Visiting Methodologist Address, Center for the Advancement of Research Methods and Analysis (May 2001).
  • Aiken, Leona. Understanding how health protective behavioral interventions work: combining research design and mediational analysis. Invited address (Feb 2001).
  • Aiken, Leona, West, S, Millsap, R. Don't shoot the messenger: Preliminary results from a survey of quantitative curriculum in psychology departments in North American. Society for Multivariate Experimental Psychology (Oct 2000).
  • Gerend, M, Aiken, Leona. Older and wiser? Women's Perceived Risk for Diseases of Aging. Poster presented at the American Psychological Association (Aug 2000).
  • Aiken, Leona. Multiple regression with funny dependent variables: Categories, ordered categories, counts. Invited address, American Psychological Association, Division 5 (Aug 2000).
  • Aiken, Leona, West, S. Probing three-way interactions in multiple regression: simple interaction tests. Poster presented at American Psychological Association (Aug 2000).
  • Aiken, Leona. Understanding how health protective behavioral interventions work: combining research design and mediational analysis. Invited address, UCLA Health Psychology Series (Jan 2000).
  • Aiken, Leona. Advancing health behavior theory: Uncovering the putative mechanisms by which interventions enhance health behavior. Presidential Address
  • Aiken, Leona. Categorical by continuous variable interactions in multiple regression. Invited Statistics Workshop
  • Aiken, Leona. Combining Psychology and Quantitative Methods into One Exciting Career. Invited Address
  • Aiken, Leona. Combining theoretical models, research design, and statistical analysis to understand how multiple component interventions enhance health protective behavior. Invited address
  • Aiken, Leona. Combining theoretical models, research design, and statistical analysis to understand how multiple component interventions enhance health protective behavior. Invited Address
  • Aiken, Leona. Continuous Variable Interactions in Multiple Regression. Invited Statistics Workshop
  • Aiken, Leona, West, Stephen. Interactions in Multiple Regression: The Basics and Beyond. Plenary Session-Invited
  • Aiken, Leona, West, Stephen. Testing and interpreting interactions with novel forms of psychological data. Invited statistics workshop
  • West, Stephen, Aiken, Leona. Multiple regression and the generalized linear model. Convention
Service
  • Area Head, Concentration in Quantitative Research Methods in Psychology, Director (2010 - Present)
  • Arizona Public Health Association, Invited Speaker on the psychology of influence in health behavior (2010 - Present)
  • Phoenix Children's Hospital, Phoenix, AZ, Trainer, Predoctoral Psychology Internship Program (2009 - Present)
  • Institutional Review Board (IRB, Human Subjects, Social Behavioral), Member (2008 - Present)
  • Institutional Review Board (IRB, Human Subjects, Social Behavioral), Member (2008 - Present)
  • Task Force on Council Representation, American Psychological Association, Member (2007 - Present)
  • Multivariate Behavioral Research; Lawrence Erlbaum Associates (Journal Editorial Board), Editorial Board (2006 - Present)
  • Multivariate Behavioral Research; Taylor and Francis Publisher (Journal Editorial Board), Editorial Board (2006 - Present)
  • Multivariate Behavioral Research; Taylor and Francis Publisher (Journal Editorial Board), Editorial Board (2006 - Present)
  • Editorial Board, Psychological Methods, American Psychological Association, Consulting Editor (1995 - Present)
  • Multivariate Series Advisory Board,Taylor and Francis Publisher, Series Advisory Board (1995 - Present)
  • Psychological Methods, American Psychological Association, Editorial Board (1995 - Present)
  • Psychological Methods, American Psychological Association, Editorial Board (1995 - Present)
  • Series Advisory Board,Lawrence Erlbaum Associates, Series Advisory Board (1995 - Present)
  • Series Editor, Journal of Personality, Series Co-Editor (1993 - Present)
  • Series Editor, Journal of Personality, Series Co-Editor (1993 - Present)
  • Site Visit Team, Psychology Department, Virginia Polytechnic Institute (VPI), Blacksburg, Virginia, Chair (2010 - 2010)
  • Board of Scientific Affairs, American Psychological Association, Co-Chair (2010 - 2010)
  • Board of Scientific Affairs, American Psychological Association, member (2008 - 2010)
  • Institutional Review Board (IRB, Human Subjects, Social Behavioral), Member (2008 - 2010)
  • Freie Universitat, Berlin, Germany, PhD Examination Committee, Dissertation (2009 - 2009)
  • Search Committee, Quantitative Faculty, Member (2008 - 2009)
  • Chair, Task Force to Increase Pipeline of Quantitative Psychologists, American Psychological Asso, Chair (2006 - 2008)
  • Trustee, Society for Multivariate Experimental Psychology, Trustee of the Board (2006 - 2008)
  • Society for Multivariate Experimental Psychology, President (2006 - 2007)
  • Graduate Studies Committee, Department, Member (2005 - 2007)
  • Area Head, Concentration in Quantitative Research Methods in Psychology, Director (1995 - 2007)
  • Chair, Coalition for Academic, Scientific and Applied Psychology, APA Council, Chair (2006 - 2006)
  • American Psychologist (Journal), Associate Editor (2002 - 2006)
  • American Psychological Association (APA), Governing Council Member (2001 - 2006)
  • Society for Multivariate Experimental Psychology, President-Elect (2005 - 2006)
  • Promotion and Tenure, Department, Subcommittee Chair (2006 - 2006)
  • University Promotion and Tenure Committee, Member (2006 - 2006)
  • American Psychological Association, Governing Council, Chair-Elect,Coalition of Academic, Scientific, and Applied Psychologists (2005 - 2005)
  • Coalition for Academic, Scientific and Applied Psychology (CASAP), President-Elect (2005 - 2005)
  • Women's Caucus of APA Council, Chair (2005 - 2005)
  • Executive Committee, Department, Member (1995 - 2005)
  • Western Psychological Association, Statistics Workshop Chair (2004 - 2005)
  • Quantitative Faculty Search Committee, Chair (2004 - 2004)
  • American Psychological Association Governing Council, Chair-Elect, Women's Caucus of the Governing Council (2004 - 2004)
  • American Psychological Association, Governing Council, Member at Large,Coalition of Academic, Scientific, and Applied Psychologists (2004 - 2004)
  • Multivariate Applications in the Behavioral Sciences, Editorial Advisory Board (2003 - 2004)
  • Policy and Planning Board, APA, Member (2003 - 2004)
  • Understanding Statistics: Statistical Issues in Psychology, (Journal), Consulting Editor (2003 - 2004)
  • Encyclopedia of Social Science Research Methods, Editorial Board (2002 - 2004)
  • Education, and the Social Sciences, Consulting Editor (2001 - 2004)
  • Understanding Statistics: Statistical Issues in Psychology, Consulting Editor (2001 - 2004)
  • Western Psychological Association, Program Chair (2003 - 2004)
  • American Psychological Association, Policy and Planning Board (2001 - 2003)
  • Chair, Coalition for Scientific and Applied Psychology of APA Council, President (2001 - 2003)
  • Education and Training Awards Committee APA, Chair (2000 - 2003)
  • American Psychological Association, Chair, Coalition of Academic, Scientific, and Applied Psychologists of American Psychological Association Governing Council (2003)
  • Task Force on Membership, APA, member (2001 - 2002)
  • Western Psychological Association, President (2001 - 2002)
  • Board of Educational Affairs, Chair, Curriculum Subcommittee (1999 - 2002)
  • Board of Educational Affairs, APA, member (1999 - 2002)
  • Technical Advisory Committee, Graduate Record Exam, member (1995 - 2001)
  • Task Force on Significance Testing, APA, member (1996 - 2000)
  • Division 5, Evaluation, Measurement, & Statistics, President (1998 - 1999)