Bio


Cameron S. Kay is a postdoctoral scholar in the Climate Cognition Lab at Stanford University. His research explores the psychological foundations of antisocial beliefs and behaviours, including why people believe in conspiracy theories, harbour prejudicial beliefs, and gaslight others. To support this work, he develops psychometrically sound scales and tools for improving data quality. Before joining Stanford, Cameron was a visiting assistant professor at Union College in Upstate New York. He earned his PhD in psychology with a specialization in quantitative research methods at the University of Oregon, where he also completed master’s degrees in psychology and journalism. He holds a BA in psychology from the University of British Columbia.

Professional Education


  • Ph.D., University of Oregon, Psychology (2023)
  • M.S., University of Oregon, Psychology (2018)
  • M.A., University of Oregon, Journalism (2018)
  • B.A., University of British Columbia, Psychology (2015)

Stanford Advisors


All Publications


  • Ego and academic ethics: A brief investigation into the associations among three facets of narcissism, academic entitlement, and academic dishonesty PERSONALITY AND INDIVIDUAL DIFFERENCES Rao, T., Kay, C. S. 2026; 253
  • To Be" or "I Am Someone Who Tends to Be": Does the Wording of Personality Items Matter? COLLABRA-PSYCHOLOGY Kay, C. S., Weston, S. J., Condon, D. M. 2026; 12 (1)
  • Why you shouldn't trust data collected on MTurk. Behavior research methods Kay, C. S. 2025; 57 (12): 340

    Abstract

    Several prior studies have used advanced methodological techniques to demonstrate that there is an issue with the quality of data that can be collected on Amazon's Mechanical Turk (MTurk). The goal of the present project was to provide an accessible demonstration of this issue. We administered 27 semantic antonyms-pairs of items that assess clearly contradictory content (e.g., "I talk a lot" and "I rarely talk")-to samples drawn from Connect (N1 = 100), Prolific (N2 = 100), and MTurk (N3 = 400; N4 = 600). Despite most of these item pairs being negatively correlated on Connect and Prolific, over 96% were positively correlated on MTurk. This issue could not be remedied by screening the data using common attention check measures nor by recruiting only "high-productivity" and "high-reputation" participants. These findings provide clear evidence that data collected on MTurk simply cannot be trusted.

    View details for DOI 10.3758/s13428-025-02852-7

    View details for PubMedID 41214376

    View details for PubMedCentralID 11539472

  • Assessing Conspiracist Ideation Reliably, Validly, and Efficiently: A Psychometric Comparison of Five Short-Form Measures ASSESSMENT Kay, C. S., Slovic, P. 2026; 33 (2): 287-302

    Abstract

    Choosing a short-form measure of conspiracist ideation (i.e., the tendency to believe in conspiracy theories) is fraught. Despite there being numerous scales to choose from, little work has been done to compare their psychometric properties. To address this shortcoming, we compared the internal consistency, 2-week test-retest reliability, criterion validity, and construct validity of five short-form conspiracist ideation measures: the Generic Conspiracist Beliefs Scale-5 (GCB-5), the Conspiracy Mentality Questionnaire (CMQ), the General Measure of Conspiracism (GMC), the American Conspiracy Thinking Scale (ACTS), and the One-Item Conspiracy Measure (1CM). The results of our investigation indicated that all five scales are reliable and valid measures of conspiracist ideation. That said, the GCB-5 tended to perform the best, while the 1CM tended to perform the worst. We conclude our investigation by discussing trade-offs among the five scales, as well as providing recommendations for future research.

    View details for DOI 10.1177/10731911251319933

    View details for Web of Science ID 001444514400001

    View details for PubMedID 40077963

  • Antecedents and consequences of COVID-19 conspiracy beliefs: A systematic review. Social science & medicine (1982) van Mulukom, V., Pummerer, L. J., Alper, S., Bai, H., Cavojova, V., Farias, J., Kay, C. S., Lazarevic, L. B., Lobato, E. J., Marinthe, G., Pavela Banai, I., Srol, J., Zezelj, I. 2022; 301: 114912

    Abstract

    RATIONALE: Belief in COVID-19 conspiracy theories can have severe consequences; it is therefore crucial to understand this phenomenon, in its similarities with general conspiracy belief, but also in how it is context-dependent.OBJECTIVE: The aim of this systematic review is to provide a comprehensive overview of the available research on COVID-19 conspiracy beliefs and to synthesise this research to make it widely accessible.METHODS: We present a synthesis of COVID-19 conspiracy belief research from 85 international articles, identified and appraised through a systematic review, in line with contemporary protocols and guidelines for systematic reviews.RESULTS: We identify a number of potential antecedents of COVID-19 conspiracy beliefs (individual differences, personality traits, demographic variables, attitudes, thinking styles and biases, group identity, trust in authorities, and social media use), their consequences (protective behaviours, self-centred and misguided behaviours such as hoarding and pseudoscientific health practices, vaccination intentions, psychological wellbeing, and other negative social consequences such as discrimination and violence), and the effect sizes of their relations with the conspiracy beliefs.CONCLUSIONS: We conclude that understanding both the potential antecedents and consequences of conspiracy beliefs and how they are context-dependent is highly important to tackle them, whether in the COVID-19 pandemic or future threats, such as that of climate change.

    View details for DOI 10.1016/j.socscimed.2022.114912

    View details for PubMedID 35354105