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Human sexuality does not stand alone. It is part of a wider picture of the sexuality of all other lifeforms. Even plants have male and female parts and reproduce sexually (the new life has characteristics from both parents). The...

How the male and female sexual roles differ

Primitive life, such as bacteria, reproduce asexually. But most animals and plants reproduce sexually. Offspring inherit genes from both parents. Even in plants, the...

Diversity: our sex, our personality and our gender

Sexuality includes our sex, our personality and our gender. The reason we have two sexes is for diversity. Some people like being different. They...

The male erectile sex organ (or phallus)

A man’s sex organ (penis) is separate from his internal reproductive anatomy (testes and glands) but also integral. The penis has three main functions. Firstly...

At puberty boys develop a reliable arousal cycle

From a young age, many boys already demonstrate a more active and outgoing personality than most girls. Boys enjoy physical activities such as sport...

Sexual responsiveness and orientation

Sexuality is about responsiveness and orientation, both of which are determined before we are born. Among the genes we inherit from our parents are...

Intercourse is a territorial act of male dominance

In a society where men and women raise families together, intercourse is presented as a lovemaking act. But by looking at Nature we can...

Consent is vital even within loving relationships

Sexuality is about the choices we make to explore our sexuality both alone and with a lover. The way in which we express our...

Penetration is what makes sex erotic and taboo

Penetrative sex (both anal and vaginal intercourse) has a special role in our concept of eroticism. Penetration by a phallus is key to our...

Women do not need to be like men to be valid

Sex educators think women need to be educated about masturbation and the clitoris. Yet no man ever needs to be told about masturbation and...

Sexual attraction and commitment to a relationship

Especially in the early days of a romance, both sexes can feel an electric thrill from touching, hearing or seeing a lover. We have...

Intercourse is an act of mating and impregnation

Sexuality is about the act of mating. Humans do not have sex simply in order to reproduce. We also have sex to enjoy pleasure...

Women mistake emotional sensations for orgasm

Female orgasm is not an issue in sexual relationships because the vast majority of women accept sex for what it is. Such women describe...

Mental arousal combines with a thrusting instinct

Men can orgasm from non-reproductive activity such as fellatio or masturbation. But men obtain the most satisfying sexual release by ejaculating into a lover’s...

How anyone achieves orgasm when they are alone

Sexuality is about enjoying the responsiveness of our own body through masturbation. Our mind’s ability to respond to erotic scenarios (both real and imagined)...

We (not a sex toy or lover) cause our own orgasm

Even when a sex organ is capable of penetration (as the penis is), it cannot cause a lover’s orgasm. For a person to orgasm,...

Only men are aroused by the prospect of sex

Men often vocalise their appreciation on seeing an attractive woman but men are rarely on the receiving end of similar flattery from women. Men...

Men are aroused by seeing and stimulating genitals

Children of both sexes are indifferent to genitals. They may be mildly curious but they consider genitals to be ugly and smelly parts of...

The role of relationship therapists and counsellors

Adults are embarrassed about sex because of their emotional insecurities. Our emotional needs include a need to impress, a need to belong and a...

The misunderstandings behind sexual dysfunction

True sexual dysfunctions are very rare. The word dysfunction implies that something is not working properly. In order to define dysfunction, we must first...

Only some men are motivated to offer foreplay

There must inevitably be some men who are content with the frequency and quality of sex that their female partners provide. This may be...

Sexual pleasure need not always focus on orgasm

Alfred Kinsey concluded that any research that involved making subjective judgements of the emotional rewards of sex activity would make it impossible to compare...

Women attract men by sexualising themselves

We wear clothes for protection, for warmth, for decency and also for display. The need to differentiate ourselves depends on our personality. Many women...