Fact check: Are there any studies on the correlation between penis size and female orgasm?

1. Summary of the results

Yes, there are multiple studies examining the correlation between penis size and female orgasm, with research showing significant correlations in specific contexts. The most prominent finding comes from research indicating that women who prefer longer penises are more likely to have vaginal orgasms, but not clitoral orgasms ^{[1] [2]}. This suggests that penis length may specifically influence vaginal orgasm frequency rather than overall orgasmic capacity.

However, the research reveals that width appears to be more important than length for overall sexual satisfaction. A study of 50 female undergraduate students found that 45 out of 50 women preferred a wider penis over a longer one ^[3], directly contradicting the common assumption that length is the primary factor in penis size preference.

Additional research using 3D models found that women preferred slightly larger penises for one-time partners compared to long-term partners, with a particular preference for larger circumference ^[4]. This suggests that context and relationship type may influence size preferences.

2. Missing context/alternative viewpoints

The original question lacks important nuance about the different types of orgasms and how penis size may affect them differently. The research specifically distinguishes between vaginal and clitoral orgasms, with correlations appearing only for vaginal orgasms ^[1].

The studies also reveal an evolutionary perspective suggesting that vaginal orgasm may have evolved as part of a female mate choice system favoring somewhat larger than average penises ^[5]. This theoretical framework provides context for why these correlations might exist from a biological standpoint.

Importantly, the research contradicts Masters and Johnson's earlier conclusion that penis size has no physiological effect on female sexual satisfaction ^[3]. This represents a significant shift in scientific understanding of the relationship between anatomy and sexual response.

The studies also indicate that individual differences in vaginocervical responsiveness may explain why some women show stronger correlations between penis size preferences and orgasm frequency ^[2].

3. Potential misinformation/bias in the original statement

The original question itself is relatively neutral and doesn't contain obvious misinformation. However, it could be interpreted as perpetuating the oversimplified assumption that penis size directly determines female sexual satisfaction, when the research shows the relationship is much more complex and context-dependent.

The question also doesn't acknowledge that different dimensions of penis size (length vs. width) may have different effects, with research showing that width is generally more important for sexual satisfaction than length ^[3].

Additionally, the framing could inadvertently promote the idea that penis size is the primary factor in female orgasm, when the research shows correlations exist primarily for one specific type of orgasm (vaginal) and that individual variation in anatomical responsiveness plays a significant role ^{[2] [5]}.