In the book, different theories on sexuality are described. The psychological theories that are mentioned are psychoanalytic theories, learning theories and cognitive theories. The book focuses on criticism on these theories as well. Evolutionary and sociological theories are described as well. Sexuality is a central aspect of human being throughout life and encompasses sex, gender identities and roles, sexual orientation, eroticism, pleasure, intimacy, and reproduction. Sex has different functions: Procreation (fertility), relationship (bonding of individuals, intimacy, confirmation of being human/a man/a woman), or recreation (pleasure, relaxation, dealing with emotions, et cetera). Sexuality evolves around psychological factors, biological/physical factors, and social factors. They all have influence on sexuality and they influence one another (the bio-psycho-social model of sexuality). Sexology is the scientific interdisciplinary study of sexuality...

Sexual behaviour is a diverse phenomenon and occurs in several physical situations, social contexts and is experienced differently by everyone. Everyone has a complex set of motivations and external influences that determine the decision to engage in sexual behaviour. It is difficult to answer all the questions about sexuality within one discipline. The study of sexuality is important for the following reasons:The exchange of sexual information is a taboo in many societies.For many people, sexuality is an important motivation in life.Some people experience difficulties and problems with their sexual functioning. The definition of gender is whether someone is male, female or other, such as trans. However, sometimes the word sex is used to describe gender, for example on a job application form. Most of the times sex refers to sexual behaviour, or reproduction. The ambiguity in the use of the word sex...