BACKGROUND This study aimed to validate a Polish adaptation of the Basic Psychological Need Satisfaction and Frustration Scale (BPNS&FS) and determine the significance of need satisfaction and frustration for mental health. The scale measures satisfaction and frustration of basic psychological needs: autonomy, competence, relatedness. The measurement of these needs has an important role in the explanation of psychological well-being and risk of disorders. PARTICIPANTS AND PROCEDURE The study involved 792 participants (50% woman) and 60 (67% men) alcohol addicted patients. We obtained a Polish translation equivalent to the original tool. Three theoretical models were tested by confirmatory factor analysis (CFA, N = 736). Reliability was tested using test-retest reliability, item-total correlation, and internal consistency. Criterion validity was evaluated based on the correlation with happiness resources, symptoms of mental health disorders, psychache, and risk of alcoholism. RESULTS CFA confirmed the validity of measurement for two independent dimensions: satisfaction and frustration of each need. The BPNS&FS is characterized by good reliability parameters. Criterion validity was confirmed by significantly positive relations of needs satisfaction with happiness resources, and negative relations with symptoms of mental health disorders, psychache, and the risk of alcoholism. Need frustration has opposite relations with the above variables. The validity was also supported by significantly higher need frustration among alcoholics, compared to a normative sample. Women differed significantly from men in lower autonomy and competence satisfaction and higher relatedness satisfaction. CONCLUSIONS The Polish version of the BPNS&FS is a valuable and reliable measurement tool. It has been confirmed that both the satisfaction and frustration of needs have important consequences for well-being and mental health.

Introduction According to Self-Determination Theory (SDT), low satisfaction, especially frustration of basic psychological needs like autonomy, competence and relatedness lead to poor well-being, the risk of harmful behaviour and psychopathology. The aim of the study was to identify the meaning...

Background: This study aimed to investigate whether The Dietary Fat and Free Sugar—Short Questionnaire (DFS) is a reliable and valid measure that can be used in Polish conditions. It involved 291 participants, aged 14 to 70 (M = 25.9, SD = 10.1), the majority of whom were women (75%). Methods: The questionnaire consisted of, among others, Polish DFS version, FFQ-6, TFEQ, and SCOFF. Test–retest reliability was established on the group of 26 students with a 2-week interval. Participants’ percentage of energy intake from both free sugars and saturated fats based on FFQ was correlated with DFS total and subscales scores. To investigate convergent and divergent validity, DFS scores with TFEQ correlations were performed. Diagnostic validity was established based on difference analysis between groups with the risk of eating disorders and those without the risk of those based on SCOFF. Results: Test–retest reliability (r_tr = 0.856) and internal consistency (α = 0.797) indicated excellent reliability. DFS correlated significantly with FFQ for both total scores (r = 0.82) and each subscale: sugar (0.79), fat (0.75), and fat–sugar (0.59). The correlations of DFS and TFEQ were statistically significant for cognitive restraint (r = 0.32) and uncontrolled eating (r = 0.19). There also have been found significant differences based on SCOFF regarding DFS. Conclusions: The results suggest good reliability and validity of the Polish version of DFS.