The Motives for Solo Masturbation Scale: Development and Preliminary Validation.

Solo masturbation is prevalent across adulthood. However, there are conflicting findings regarding how masturbation is associated with well-being. Understanding individuals' motives for masturbating might help disentangle these conflicting findings; yet, existing measures are suboptimal for assessing motives for solo masturbation. In this study, 2960 adults (18-84 years old, M_age = 32.62, SD_age = 11.36, 60.2% men, 36.8% women) who had engaged in solo masturbation within the past year responded to items, written based on existing literature, reflecting a wide range of motives for masturbating. Exploratory factor analysis revealed eight factors that warranted retention (Fantasy, Pleasure/Arousal, Compulsion, Improvement, Sexual Dissatisfaction, Coping, Efficiency, and Avoidance of Risky Sex), and this structure was confirmed using confirmatory factor analysis. Measurement invariance was established across men and women, and individuals in and not in a sexually active romantic relationship. The resultant measure comprises 24 items assessing eight distinct motives. Fit indices and scale reliabilities suggest this new measure of masturbation motives is psychometrically sound. Correlations with related constructs (e.g., sex drive, dissatisfaction with partnered sex, religiosity, depression, anxiety, and attitudes toward masturbation) provide preliminary evidence of validity. Suggestions for future investigations and further development of this new measure are discussed.