Development and Validation of the Self-Perceived Anhedonia Scale for Adults: A Novel Tool for Assessing Pleasure Deficits

Background: The present study focuses on the development and validation of the Self-Perceived Anhedonia Scale for Adults (SPAS-A), a novel instrument designed to assess pleasure deficits across multiple dimensions of anhedonia, including social, physical, cognitive, and emotional facets. The study aimed to establish the psychometric properties of the scale, including its reliability and validity. Materials and methods: All the data were collected from a sample of 600 participants between February 2024 and November 2024 via Google Forms. Results: Factorial analysis, including Exploratory Factor Analysis and Principal Component Analysis, revealed a four-factor structure, accounting for 72.4% of the total variance, which demonstrated a coherent and multidimensional representation of anhedonia. The reliability of the scale was further supported by high Cronbach’s Alpha values for each subscale, with social anhedonia showing an exceptional value of 0.916, followed by emotional (0.905), cognitive (0.900), and physical (0.873) anhedonia. Conclusions: These findings indicate that SPAS-A is a reliable and valid tool for assessing pleasure deficits in adults, providing a comprehensive measure of anhedonia that can be utilized in both clinical and research settings. Future studies could benefit from longitudinal designs and more diverse samples to better understand the temporal and cultural variability of anhedonia.