Development of the Psychological Flexibility in Romantic Relationships Scale (PFRRS): A Validity and Reliability Study

This research aimed to investigate the psychometric properties of the Psychological Flexibility in Romantic Relationships Scale. Data were collected from two separate study groups in 2024 to assess the validity and reliability of the developed measurement tool. Exploratory and confirmatory factor analyses were conducted to assess the construct validity of the scale. The results supported the single-factor structure of the six-item scale. To provide evidence for the convergent validity of the Psychological Flexibility in Romantic Relationships Scale, its scores were correlated with the Psychological Flexibility Scale and the convergent validity was supported by a significant correlation coefficient of .72 between the scales. Cronbach Alpha coefficients examined for the reliability of the scale are above acceptable limits in both exploratory (.77) and confirmatory (.71) factor analyses and support internal consistency. Item-total correlations indicated that the scale items were highly correlated with the general factor representing the scale. Independent samples t-tests conducted on the top and bottom 27% of the sample revealed significant differences, indicating that the scale could discriminate between individuals with high and low levels of psychological flexibility in romantic relationships. In conclusion, the developed scale was found to be a valid and reliable measurement tool.