The Royal New Zealand College of General Practitioners

The findings also show people with appetites for online sex, prostitution, sex that puts you at risk of harm, degrading sex, or public indecency tend to have commitment issues.

The first New Zealand study of "out-of-control sexual behaviours" and their impact on relationships has been completed by Massey psychology student Karen Faisandier as part of her honours degree.

Of the 621 participants in the anonymous online survey, two-thirds were assessed as having out-of-control sexual behaviour. Those people were more likely to be anxious about closeness and find relationships threatening.

By contrast, most of the other respondents perceived relationships as safe, partners as trustworthy and intimacy as desirable.