Delta 9 Scale: English, German, and Serbian Versions

The relationship between the HEXACO personality model and Disintegration – a personality trait encompassing psychotic-like experiences/behaviors - was investigated. In this pre-registered study, we predicted that Disintegration factor would separate from HEXACO. Support for the metric invariance of the seven-factor structure based on HEXACO and Disintegration in three general population samples (UK, Germany, Serbia) consisting of 1105 participants in total was found. As expected, all nine subdimensions of Disintegration formed a strong higher-order factor separate from HEXACO factors. Disintegration appeared to be the most coherent and robust among the seven factors across samples (three nations) and units of analysis (facets and items). These findings further disconfirm a widely held assumption that psychotic-like tendencies are best conceptualized as high Openness.

Code for: Knežević, G., Lazarević, L. B., Bošnjak, M., & Keller, J. (2022). Proneness to psychotic-like experiences as a basic personality trait complementing the HEXACO model—A preregistered cross-national study. Personality and Mental Health, 16(3), 244-262. https://doi.org/10.1002/pmh.1537

The main aim of the study is to test the cross-cultural validity of the seven-factor model of personality, defined by HEXACO and Disintegration traits, across three different cultural groups: Serbs, UK, and Germans. The main hypothesis is that Disintegration facets will form the expected Disintegration factor separate from HEXACO factors in each of the three samples. We will employ the multi-group Exploratory Structure Equation Modelling (ESEM) to test the factorial invariance of the seven-factor personality model across the three ethnic groups. We also expect the separation of Disintegration factor in the EFA (Exploratory Factor Analysis) at the item level, that includes all participants. Data will be collected using a 100- item HEXACO personality inventory assessing six basic personality traits, and the 20-item DELTA questionnaire measuring Disintegration trait. In addition, sociodemographic data on gender, age and educational level will be collected. Data collected in Serbia serve for exploratory purposes, while data collected in UK and Germany will serve for confirmatory purposes.