Background:
Accurate psychometrics benefit from assessing given constructs within specifically defined contexts. The assessment of context-specific irrational beliefs as put forth in rational emotive behaviour therapy (REBT), under the three basic psychological needs described in self-determination theory (SDT), represents a new path for research. Under the umbrella of ‘positive psychology’, a new scale for adolescents combining REBT and SDT is the first step towards conceptualizing irrational beliefs within the three basic psychological needs. The integration of REBT and SDT would provide a more fully integrated view of adolescent mental health, and as such could provide a more cost-effective approach for preventing cognitive, emotive and behavioural disturbances in young people.
Aims:
The main aim of this paper is to outline the development and validation of the Rational Emotive Self Determination Scale for Adolescents (RESD-A), which measures irrational beliefs about the three basic psychological needs (autonomy, competence and relatedness).
Method:
To achieve this main study aim, we report the results of four studies that test the factor structure, internal consistency, construct, predictive validity, and test–re-test reliability of the 51-item RESD-A, within samples of Turkish adolescents.
Results:
Data analyses confirmed the theoretical expectations and yielded promising results for the validity and reliability of the RESD-A.
Conclusions:
The results suggest that assessment of irrational beliefs in the context of autonomy, competence and relatedness is possible and valuable for the treatment of adolescents.