Individual Differences

The Individual Differences research group is dedicated to studying the dispositional and environmental determinants of human behavior and their interaction.

One of the key research lines of this group focuses on gathering systematic evidence of the existence of Disintegration, a basic personality trait that is not covered by dominant models such as the Big Five or HEXACO. This trait represents a broad, hierarchically organized, cross-culturally stable, and multidimensional dispositional structure linked to the tendency toward psychotic experiences and behaviors in the general population. Beyond Disintegration, our personality psychology research also systematically explores the fundamental trait of Amorality.

In the domain of cognitive and perceptual processes and functions, we explore a wide range of topics, including intelligence, cognitive biases, executive functions, apophenia, cognitive reflection, and thinking styles.

Furthermore, we are also interested in clinically relevant constructs such as personality disorders, psychosis, depression, narcissism, cortisol hyper-suppression, post-traumatic stress disorder, and traumatic war experiences. Our research also encompasses constructs such as socio-political attitudes, values, and irrational beliefs.

Our approach involves diverse research methods, ranging from laboratory experiments and experience sampling to large cross-sectional studies on representative samples. In data collection, we use self-report instruments, assessments by close others, psychological tests and batteries, implicit association tests, as well as devices for measuring physiological responses. For data analysis, we apply a wide range of advanced statistical methods.

We foster interdisciplinary collaboration, both within psychology, particularly with social and clinical psychologists, and with experts from other scientific fields, including psychiatrists, medical doctors, molecular biologists, geneticists, engineers, and researchers in artificial intelligence.

Keywords: personality structure, Disintegration, intelligence, executive functions, cognitive biases, apophenia, dispositions/thinking styles, militant-extremist mindset

Research Line Lead: Goran Knežević

  1. Bjekić, J., Živanović, M., Purić, D., Oosterman, J. M., & Filipović, S. R. (2018). Pain and executive functions: a unique relationship between Stroop task and experimentally induced pain. Psychological research, 82(3), 580–589. https://doi.org/10.1007/s00426-016-0838-2
  2. Knežević, G., Kušić, M., Lukic, P., Lazarević, L. B., & Keller, J. (2024). Can the “shotgun wedding” of openness and psychoticism be justified based on apophenia as the disposition to commit false-positive errors? Zeitschrift für Psychologie, 232(4), 255–268. https://doi.org/10.1027/2151-2604/a000580
  3. Knežević, G., Lazarević, L. B., Bosnjak, M., Purić, D., Petrović, B., Teovanović, P., Opačić, G., & Bodroža, B. (2016). Towards a personality model encompassing a Disintegration factor separate from the Big Five traits: A meta-analysis of the empirical evidence. Personality and individual differences, 95, 214–222. https://doi.org/10.1016/j.paid.2016.02.044
  4. Knežević, G., Savić, D., Kutlešić, V., & Opačić, G. (2017). Disintegration: A reconceptualization of psychosis proneness as a personality trait separate from the Big Five. Journal of research in personality, 70, 187-201. https://doi.org/10.1016/j.jrp.2017.06.001
  5. Lazarević, L. B., Knežević, G., Purić, D., Teovanović, P., Petrović, M. B., Ninković, M., Živanović, M., Stanković, S., Branković, M., Lukić, P., Opačić, G., & Žeželj, I. (2023). Tracking variations in daily questionable health behaviors and their psychological roots: a preregistered experience sampling study. Scientific reports, 13(1), 14058. https://doi.org/10.1038/s41598-023-41243-w
  6. Lazarević, L. B., Purić, D., Teovanović, P., Lukić, P., Zupan, Z., & Knežević, G. (2021). What drives us to be (ir)responsible for our health during the COVID-19 pandemic? The role of personality, thinking styles, and conspiracy mentality. Personality and individual differences, 176, 110771. https://doi.org/10.1016/j.paid.2021.110771
  7. Lukić, P., & Živanović, M. (2021). Shedding light on the Light Triad: Further evidence on structural, construct, and predictive validity of the Light Triad. Personality and individual differences, 178, 110876. https://doi.org/10.1016/j.paid.2021.110876
  8. Purić, D. & Jokić, B. (2023). The Serbian validation of the Rational-Experiential Inventory-40 and the Rational-Experiential Multimodal Inventory. PLoS ONE, 18(11): e0294705. https://doi.org/10.1371/journal.pone.0294705
  9. Teovanović, P., Knežević, G., & Stankov, L. (2015). Individual differences in cognitive biases: Evidence against one-factor theory of rationality. Intelligence, 50, 75-86. http://doi.org/10.1016/j.intell.2015.02.008
  10. Teovanović, P., Purić, D., Živanović, M., Lukić, P., Branković, M., Stanković, S., Knežević, G., Lazarević, Lj., & Žeželj, I. (2024). The role of cognitive biases in shaping irrational beliefs: a multi-study investigation. Thinking & Reasoning, 1–44. https://doi.org/10.1080/13546783.2024.2421367