Modeling synergy: How to assess a Type D personality effect

Journal of Psychosomatic Research
Paul Lodder

Abstract

In research on Type D personality, its subcomponents negative affectivity (NA) and social inhibition (SI) are hypothesized to have a synergistic effect on various medical and psychosocial outcomes. As some methods to analyze Type D personality have been criticized, this study investigated whether these methods adequately detect a Type D effect. We used a simulation and two empirical illustrations to investigate each method's performance (bias, power and false positives) in detecting the Type D effect. Our simulation showed that the two most commonly used methods to assess the Type D effect (subgroup methods) were primarily picking up the presence of NA or SI main effects, indicating that these methods might falsely suggest synergistic Type D effects. Moreover, these methods failed to detect the combined presence of the NA and SI main effects, resulting in significant Type D effects when only one of the NA/SI main effects was present. The method that best detected Type D effects modeled the continuous NA/SI main effects and their statistical interaction in a regression analysis. Reanalysis of two empirical Type D personality datasets confirmed the patterns found in our simulation. This study showed that Type D effects should be ...Continue Reading

Citations

Nov 21, 2020·International Journal of Environmental Research and Public Health·Karolina ChilickaEwa Adamczyk
May 7, 2021·International Journal of Behavioral Medicine·Olga Igorevna RaykhEkaterina Victorovna Korok
May 8, 2021·General Hospital Psychiatry·Paul LodderJelte M Wicherts
Oct 11, 2020·Journal of Psychosomatic Research·Olga Igorevna RaykhGalina Vladimirovna Artamonova
Aug 2, 2021·Journal of Psychosomatic Research·Jess G Fiedorowicz

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