Free to be me with you: Development of the Individuality in Couples Questionnaire.

Despite multiple theories and treatment modalities emphasizing the importance of individuality in couple relationships, the field is lacking a reliable and valid measure of this construct. In the present study, we developed the Individuality in Couples (ICQ) questionnaire and demonstrated its strong psychometric properties across two samples of participants in committed intimate relationships (Sample 1 = 580 undergraduates; Sample 2 = 445 community members). The ICQ is comprised of 25 items that can be combined into a reliable total score to measure individuality in the context of couple relationships (i.e., the extent to which someone feels respected by their partner for their individuality and experiences personal autonomy in the relationship). Scores on the ICQ demonstrated high internal consistency, excellent construct replicability, convergent and divergent validity with measures of other relationship dimensions (i.e., intimacy, support, sexual satisfaction, psychological aggression, communication), criterion validity with measures of relationship satisfaction and partner health, and incremental predictive validity for explaining relationship satisfaction and partner well-being when controlling for other relationship dimensions. Results suggest that individuality in couples is largely a unidimensional construct that is distinct from more severe patterns of control and coercion characteristic of psychological aggression. The ICQ holds promise for identifying and promoting dynamics essential for healthy couple relationships. (PsycInfo Database Record (c) 2023 APA, all rights reserved).