Negative attitudes toward masturbation inventory & excessive masturbation scale: parallel investigation of their psychometric properties in a Greek adult population sample
摘要
The scientific interest toward excessive sexual behavior and associated value–behavior misalignment is increasing, particularly after the inclusion of Compulsive Sexual Behavior Disorder (CSBD) in the eleventh revision of the International Classification of Diseases (ICD-11), along with its moral incongruence rule-out criterion. However, instruments assessing manifestations of sexual compulsivity and ego-dystonic states within the context of solitary sexual activities are seldom subjected to psychometric evaluation. Further investigation into these measures is essential to elucidate their reliability, clinical relevance, and cross-cultural applicability. This is particularly relevant to compulsive masturbation, which constitutes one of the most frequently observed manifestations of CSBD. Therefore, this study aimed to adapt and assess the psychometric properties of the Negative Attitudes Toward Masturbation Inventory (NATMI) & the Excessive Masturbation Scale (EMS) in a Greek adult population sample. These instruments were primarily evaluated for their face validity, factorial structure, internal consistency, discriminant validity, and predictive ability. Both versions of the instruments, derived from the Confirmatory Factor Analysis (CFA) procedures, demonstrated very good fit indices, strong validity and reliability properties, and managed to associate with the selected variables as predicted. A more negative attitude toward masturbation was associated with less frequent masturbation, older ages of masturbation commence, higher scores on aspects of psychological distress and religiosity, impaired sexual functioning, and less sexual desire. Higher scores on excessive masturbation were associated with a greater frequency of masturbation, younger ages of masturbation onset, higher scores on depression, anxiety, and stress, more sexual desire, and impaired sexual function. Overall, both instruments appear to measure what they claim to measure, and are therefore proposed for farther psychometric evaluation and validation.