The Relationship between Subjective and Physiological Sexual Arousal in Women with and without Arousal Concerns.

Whereas laboratory studies frequently report low correlations between women's physiological and subjective sexual arousal (i.e., concordance), research employing advanced statistical techniques reveals striking between-person variability in this relationship. Moreover, previous research has shown that interoception (i.e., the awareness of changes within the body) influences concordance in women, though how this effect varies by sexual function is yet unknown. The present study used multilevel modeling to examine concordance in women with (n = 27) and without (n = 28) sexual arousal concerns and explored how concordance varies as a function of interoception. Women viewed a sexual film while their arousal responses were measured and then completed a self-report measure of interoception. A significant relationship emerged between physiological and subjective sexual arousal, in addition to tremendous between-person variability across both groups. Several aspects of interoception moderated concordance (p's between 0.0008 and 0.03), and this pattern varied across groups. Given this variability even in absence of sexual arousal concerns, these findings question the utility of using concordance as a clinical outcome in treatment research. Individual differences in interoception may have implications for treatment matching.