Article ; Online: Modeling synergy: How to assess a Type D personality effect.
Journal of psychosomatic research
2020 Volume 132, Page(s) 109990
Abstract: Objective: 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 ... ...
Abstract | Objective: 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. Method: 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. Results: 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. Conclusion: This study showed that Type D effects should be modeled with a continuous interaction approach. Other approaches showed either more bias, more false positive findings or lower power. We recommend against using subgroup approaches to operationalize Type D personality, as these methods are biased, regardless of whether the Type D effect is synergistic or additive in nature. |
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MeSH term(s) | Female ; Humans ; Inhibition, Psychological ; Male ; Type D Personality |
Language | English |
Publishing date | 2020-03-02 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 80166-5 |
ISSN | 1879-1360 ; 0022-3999 |
ISSN (online) | 1879-1360 |
ISSN | 0022-3999 |
DOI | 10.1016/j.jpsychores.2020.109990 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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