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Masturbation Trajectories from Late Adolescence into Mid-Adulthood: A Population-Based Longitudinal Study
Anna Ivanova1, Sam Fluit2, Nantje Fischer1
1CENSE - Norwegian Research Centre for Sexual Health, Department of Psychology, University of Oslo.
Journal of Sex Research
|April 29, 2025
Summary
Masturbation frequency varies by gender and life stage, with women
Area of Science:
- Sexuality and sexual health research
- Adult development and aging
- Behavioral science
Background:
- Masturbation is a common sexual behavior across the lifespan.
- Longitudinal data on masturbation frequency development is limited.
- Understanding masturbation's trajectory informs sexual health and well-being.
Purpose of the Study:
- To examine the developmental trajectories of masturbation frequency from age 19 to 50.
- To investigate factors influencing these trajectories, including gender, partnership, parenthood, and sexual identity.
- To explore the relationship between masturbation and partnered sexual activity.
Main Methods:
- Multilevel growth curve modeling was used.
- A longitudinal population-based sample of 2,562 individuals (ages 19-50) was analyzed.
- Data controlled for partnered sex frequency, sexual fantasizing, and partnership status.
Main Results:
- Women's masturbation frequency increased until their early 30s, then slightly declined; men's remained stable.
- Trajectories were independent of partnered sex frequency but influenced by partnership status and fantasizing for men.
- Childless individuals showed a distinct pattern compared to those who became parents.
- Nonheterosexual individuals reported higher masturbation frequency than heterosexual individuals across all ages.
Conclusions:
- Masturbation exhibits autonomy from partnered sex frequency but is shaped by individual life circumstances.
- Sexual identity significantly influences masturbation frequency.
- Further research is needed on masturbation's interplay with partnered sex and relational factors.
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