This study investigates the psychometric characteristics of the General Decision-Making Scale (GDMS) on a sample of Slovak high-school and university students. Secondly, it addresses the relationship between decision-making styles and a) decision making competencies and b) mental health as validity criteria. Participants were 427 Slovak high school and university students (64.6% females). The GDMS showed a good internal consistency and its original factor structure was confirmed. Low but significant relationships between the decision-making styles were found. Two decision-making styles served as significant predictors of the general decision-making competency (avoidant and spontaneous) and another two were found to predict mental health. The intuitive decision-making style was a protective factor and the avoidant style was a risk factor.

The objective of this study was to adapt the Pre-Adolescent Decision-Making Competence Test to Turkish, which was originally developed in English by Weller, Levin, Rose and Bossard (2012) for assessing decision-making competence of children between the ages of 9 and 14. For this purpose; a) the test and instructions were translated into Turkish, b) the Turkish test was administered to a group of 398 students as a pilot, c) retest was administered to a group of 97 students, and finally, d) a group of 382 students was subject to a norm study. The Confirmatory Factor Analysis model created by the data of the pilot administration was well adapted, and one-factor model was verified for construct validity. As the construct of the test was altered, a Confirmatory Factor Analysis was performed on the data obtained from the norm study. A construct similar to that acquired from the data of the first test administration and the results obtained have even relatively better fit indices. Although the reliability values were less than what was expected, Cronbach’s Alpha coefficient of internal consistency was similar to the results obtained from the original test.

A study using a high school and college sample (age 18–26) was conducted to validate the Slovak version of the Adult Decision-Making Competence. The results were similar to findings reported by Bruine de Bruin, Parker, and Fischhoff (2007) on the adult population in America. The internal consistency of component subscales and whole measure was confirmed as well as the factor structure. Gender differences in two of the six subscales were found. The results highlight the usefulness of A-DMC in assessing decision-making competence in Slovak language, but non-student samples are needed to enhance the generalisability of findings.