The SOI-R scale (Penke & Asendorpf 2008) measures your tendency to separate — or not — sexuality from emotional commitment. It isn't a moral judgement and it isn't a measure of sexual orientation: it's a stable trait that, when mismatched in a couple, generates deep misunderstandings.
The three components of the SOI-R
Past experiences of sex outside an emotional commitment. Measures actual behaviour, not attitudes or desires.
Cognitive openness to sex independent of commitment. What you find morally acceptable, regardless of what you do.
Spontaneous fantasies about multiple relationships or partners. Desire can be present without ever translating into behaviour.
The restricted-unrestricted spectrum
Scores range from very restricted (sex only within a strongly committed frame) to very unrestricted (comfort with sex independent of commitment). Both extremes exist in a normal population. The problem arises when partners are at opposite ends without having voiced it.
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Frequently asked questions
Does a high score mean a tendency to infidelity?
Not necessarily. The SOI-R measures attitudes and desires, not behaviour within a committed relationship. A high score can coexist with total fidelity if commitment is chosen consciously.
Is the SOI-R linked to sexual orientation?
No. Sexual orientation is independent of sociosexuality. A gay person can have a very restricted SOI, and a straight person a very unrestricted one.
Is this trait changeable?
It's relatively stable. Long committed relationships can slightly reduce behavioural SOI, but desire and attitudes resist more.