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Psychological Sciences Faculty

Louis TayLouis Tay

Assistant Professor, Industrial/Organizational

Mailing Address:
Department of Psychological Sciences
Purdue University
703 Third Street
West Lafayette, IN 47907-2081 USA

Campus Address:
Psychological Sciences, Room 2120

E-mail: stay@purdue.edu
Telephone: (765) 494-0715
Website: www.louistay.com
CV: LouisTay.pdf

Ph.D. from University of Illinois at Urbana-Champaign, 2006-2011
BA (Honors First Class) from the University of Melbourne, Dec. 2005
BA (with Merit) from the National University of Singapore, 2001-2004

Research Interests:

How do we conceptualize well-being and how can we improve the well-being of societies, organizations, and individuals? This question is of increasing concern to academics from many fields and policy makers. As an applied psychologist, I seek to delineate the social, economic, and political determinants of well-being at both the micro- and macro-level with an eye toward public policy. Much of my research is currently based on psychological theories that I am seeking to integrate with other fields such as business, economics, and sociology. My research on well-being has appeared in journals such as Journal of Personality and Social Psychology, Psychological Science, Social Psychological and Personality Science, Journal of Happiness Studies, Social Indicators Research, and Journal of Vocational Behavior.

As an applied psychologist, another question that drives my research is: how can we accurately quantify constructs of interest in individuals, organizations, and societies? This entails research on newer measurement models that are integrated with latent class and multilevel techniques. With latent class modeling, we can identify groups of individuals that have unique signature patterns (e.g., signature strengths); with multilevel models, key characteristics of collective units (e.g., organizations and societies) can be measured more effectively. At a more basic level, I seek to advance current measurement models that impact construct validation techniques. My research on methodology and various methodological contributions have appeared in journals such as Journal of Applied Psychology, Personnel Psychology, Organizational Research Methods, Applied Psychological Measurement, and Educational and Psychological Measurement.

My hope is to contribute to the advancement of individual, organizational, and societal well-being, through well-being research, and to enhance scientific rigor through methodology.

My research has been featured in various media outlets such as Wall Street Journal, APA Monitor on Psychology, Scientific American Mind, Psychology Today, MSNBC. A sample of my funded grants and publications is shown below.


Measuring virtues: Overcoming self-report limitations for cost-effective scalable assessment. John Templeton Foundation. (Aug 2014 – Aug 2016). Status: Funded. (amount $250,000.00). PI: L. Tay; Co-I: S. Stark.

Representative Publications (*represents student authors)


Tay, L. & Diener, E. (2011). Needs and subjective well-being around the world. Journal of Personality and Social Psychology, 101, 354-365.

Diener, E., Tay, L., & Myers, D. (2011). The religion paradox: If religion makes people happy, why are so many dropping out? Journal of Personality and Social Psychology, 101, 1278-1290.

Morrison, M., Tay, L., & Diener, E. (2011). Subjective well-being and national satisfaction. Psychological Science, 22, 166-171.

Tay, L. & Harter, J. K. (2013). Economic factors and labor market forces matter for worker well-being. Applied Psychology: Health and Well-Being, 5, 193-208. doi: 10.1111/aphw.12004

Tay, L, & *Kuykendall, L. (2013). Promoting happiness: Malleability of individual and societal-level happiness. International Journal of Psychology, 48, 159-176.

Tay, L., Tan, K., Diener, E., & Gonzalez, E. (2013). Social support, health behaviors, and health outcomes: A survey and synthesis. Applied Psychology: Health and Well-Being, 5, 28-78.

Diener, E., Tay, L., & Oishi, S. (2013). Rising income and subjective well-being of nations. Journal of Personality and Social Psychology, 104, 267-276.

Herian, M. N., Tay, L., Hamm, J. A., Diener, E. (2014). Social capital, ideology, and health in the United States. Social Science and Medicine, 105, 30-37.

Tay, L., Herian, M. N., Diener. E. (2014). Detrimental effects of corruption on subjective well-being: Whether, how, and when. Social Psychological Personality Science, 5, 751-759.

Tay, L., Morrison, M., & Diener, E. (2014). Living among the affluent: Boon or bane? Psychological Science, 25, 1235-1241.

Su, R., & Tay, L., & Diener, E. (2014). The development and validation of Comprehensive Inventory of Thriving (CIT) and Brief Inventory of Thriving (BIT). Applied Psychology: Health and Well-Being, 6, 251-279.

*Newman, D. B., Tay, L., & Diener, E. (2014). Leisure and subjective well-being: A model of psychological mechanisms as mediating factors. Journal of Happiness Studies, 15, 555-578.

*Kuykendall, L., Tay, L., & *Ng, V. (2015). Leisure engagement and subjective well-being: A quantitative review. Psychological Bulletin, 141, 364-403.


Tay, L., Williams, B. A., Drasgow, F., & Rounds, J. (2009). Fitting ideal-point models to vocational interest data: Are dominance models ideal? Journal of Applied Psychology, 94, 1287-1304.

Tay, L. & Drasgow, F. (2011). Adjusting the adjusted χ2/df ratio statistic for dichotomous item response theory analyses: Does the model fit? Educational and Psychological Measurement, 72, 510-528.

Tay, L., Ali, U. S., Drasgow, F. & Williams, B. A. (2011). Fitting IRT models to dichotomous and polytomous data: Assessing the relative model-data fit of ideal point and dominance models. Applied Psychological Measurement, 35, 280-295.

Tay, L., Newman, D. A., & Vermunt, J. K. (2011). Using mixed-measurement item response theory with covariates (MM-IRT-C) to ascertain observed and unobserved measurement equivalence. Organizational Research Methods, 14, 147-146.

Tay, L., Diener, E., Drasgow, F., & Vermunt, J. K. (2011). Multilevel mixed-measurement IRT analysis: An explication and application to self-reported emotions across the world. Organizational Research Methods, 14, 177-207.

Tay, L., Su, R., & Rounds, J. (2011). People-Things and Data-Ideas: Bipolar dimensions? Journal of Counseling Psychology, 58, 424-440.

Tay, L., & Drasgow, F. (2012). Theoretical and statistical issues in the assessment of construct dimensionality: Accounting for the item response process. Organizational Research Methods, 15, 363-384.

Tay, L., Vermunt, J. K. & Wang, C. (2013). Assessing the item response theory with covariate (IRT-C) framework for ascertaining differential item functioning. International Journal of Testing, 13, 201-222.

Tay, L., Woo, S.E., & Vermunt, J. K. (2014). A conceptual framework of cross-level Isomorphism: Psychometric validation of multilevel constructs. Organizational Research Methods, 17, 77-106.

Tay, L., Meade, A., & *Cao, M. (2015). An overview and practical guide to item response theory measurement equivalence. Organizational Research Methods, 1, 3-46.

Tay, L., *Huang, Q., & Vermunt, J. K. Item response theory with covariates (IRT-C): Assessing item recovery and differential item functioning for the three-parameter logistic model. (in press). Educational and Psychological Measurement.

Please see Google Scholar for my published papers. Please email me for my updated CV.

Representative Reports

De Neve, J.-E., Diener, E., Tay, L., and Xuereb, C. (2013) The Objective Benefits of Subjective Well-Being. In Helliwell, J., Layard, R., and Sachs, J. (Eds.) World Happiness Report 2. Earth Institute, Columbia University, New York. United Nations World Happiness Report.

Diener, E., & Tay, L. (2012). A scientific review of the remarkable benefits of happiness for successful and healthy living. Report of the Well-Being Working Group, Royal Government of Bhutan: Report to the United Nations General Assembly, Well-Being and Happiness: A New Development Paradigm, UN, NY, April 2.

Editorial Boards

Journal of Applied Psychology

Journal of Management

Organizational Research Methods

Psychological Assessment

Ad hoc Journal Reviewer

Applied Psychology: An International Review, Applied Psychology: Health and Well-Being, Applied Psychological Measurement, Behavioral Research Methods, Current Directions and Psychological Science, Journal of Applied Psychology, Journal of Counseling Psychology, Journal of Cross-Cultural Psychology, Journal of Experimental Psychology: General, Journal of Personality and Social Psychology, Management and Organizational Review, Military Psychology, Motivation and Emotion, Personality and Social Psychology Bulletin, Personality and Social Psychology Review, Perspectives on Psychological Science, Psychological Assessment, Social Indicators Research, Social Psychological and Personality Science, Social Science Research

Research Team

My research team consists of my graduate students Lauren Kuykendall, Vincent Ng, and Cassie Batz, collaborators at Purdue, and other universities. Lauren, Vincent, Cassie and I currently are undertaking multiple writing and research projects on well-being. I also work closely with collaborators from different fields as I seek to do multidisciplinary research. Feel free to contact me if you are interested in collaborating on research projects.

Outgoing Students: Lauren Kuykendall (Assistant Professor, George Mason University)

Potential Graduate Students

The Purdue I/O program is among the top in the nation and admission is highly competitive. For general information and rankings about the program see here. For specific information about the I/O program see here.