Sexual satisfaction can be defined as an affective response that arises from the evaluation of the positive and negative aspects associated with one’s sexual relations. It is considered to be the last phase of the sexual response, associated with the frequency and variety of sexual activities performed. The phases that make up the sexual response are: desire, arousal, orgasm and sexual satisfaction. In the study of the latter, several variables have been found that determine the level of satisfaction, among them interpersonal and intrapersonal variables and not so many sociodemographic variables. However, it is known that satisfaction decreases with age, and the role of gender is not so clear.
Authors such as Byers, Demmons, and Lawrance have proposed an “Interpersonal Sexual Satisfaction Exchange Model” (IEMSS), according to which sexual satisfaction is higher as, over time, relationship contentment is high and levels of sexual rewards are higher than levels of “sexual costs. A study testing the model showed that it worked for both women and men, as well as for recent and long-term relationships. They therefore conclude that the IEMSS offers a promising approach to researching and understanding sexual satisfaction.