Validation and invariance across age and gender for the Melbourne Decision-Making Questionnaire in a sample of Portuguese adults

Luís Filipe, Maria-João Alvarez, Magda Sofia Roberto and Joaquim A. Ferreira

Judgment and Decision Making, 2020, vol. 15, issue 1, 135-148

Abstract: The personal pattern of coping with the stress associated with making decisions characterizes the way an individual makes choices and judgments. The Melbourne Decision Making Questionnaire (MDMQ) analyses these personal patterns and has been used across various cultures in order to assess four main strategies: vigilance, buck-passing, procrastination, and hypervigilance. We sought to adapt and validate a Portuguese version of the MDMQ. Our study was conducted with a sample of 523 Portuguese people aged 18 or older. The questionnaire retained the original four scales, which represent four different decisional patterns, showing good reliability and validity – concurrent as well as predictive – and invariance for gender and age. The coping pattern with the highest mean was vigilance, while procrastination had the lowest mean. In contrast to other studies of the MDMQ, our sample had a more diversified distribution of age. Young adults were less capable than older adults of managing stress when making decisions, due to their higher levels of buck-passing, hypervigilance, and procrastination. Vigilance showed stronger correlations to positive affect, satisfaction with life, and better decisional self-esteem, while the remaining scales were related to negative affect, reduced decisional self-esteem, and lower satisfaction with life. These decision-making styles are chosen depending on time constraints, pressure, or other contextual characteristics. These results suggest that individuals resort to more convenient patterns according to their situation, and that these patterns of decision-making can be trained, developed, and improved.

Date: 2020
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