Originally Posted by Don Logan
Research proves that, yes, women do like longer dicks. In a small sample group, when dicks were shortened, women were unhappy. Or: big dick = happy wife.The interesting thing is they used silicone donuts to limit length. They’re normally used to prevent collision dyspareunia; or, "pain that occurs during intercourse when your partner’s penis collides into your cervix."
Research: https://bjui-jo urnals.onlineli … .1111/bju.15416
Summarized version: Penis length makes a difference during sex, study finds | Daily Mail Online
The data in this study are interesting. The most interesting data is found in Supplementary Figure 7(S7), which gives the sexual pleasure from intercourse alone (subjectively rated on a scale from 0 to 100, where 100 is the best that the woman have experienced) for different BPEL and for different thicknesses of rings (that limit penetration depth).
The first result is that most women give a rating of about 75, regardless of BPEL. More precisely, when their men were wearing a 0.5-thick-ring, the average rating was 72 for those with a BPEL of 13 cm, slowly increasing to 75 for those with a BPEL of 18 cm. The difference between 72 and 75 is not even close to being statistically significant. However, this part of the result is not very interesting in any case. If you asked everyone to rate their overall happiness on a scale from 0 to 100 (with 100 being the happiest they had been), most people would tend to give an answer of about 70. This would not mean that everyone is equally happy, it just means that people tend to rate things at about 70% when there is not an objective scale and when they are not comparing themselves to others.
The part of the study that is interesting is the effect of the rings which artificially shorten the maximum penetration depth. Here two things should be noted: (1) less penetration depth causes a lower rating and (2) there are only marginal gains after 15 cm (or 6 inches) of BPEL.
For shorter BPEL, there is an approximately 10 point loss for each cm of lost maximum penetration depth due to thicker rings. For example, for a BPEL of 13 cm, the rating goes down from 72 for a 0.5-cm-thick ring to 27 for a 5.0-cm-thick ring. A similar pattern is seen for other shorter BPEL. This same trend of 10 points per cm is seen when larger BPEL go from 3.8-cm-thick rings to 5-cm-thick rings. For example, for 18 cm BPEL, there is an 11-point drop for this 1.2-cm loss of penetration depth, and for 17 cm BPEL, there is a 10-point drop.
For longer BPEL, there is only a very small loss (about 2 points per cm of lost penetration depth) when going from the a 0.5-cm-thick ring to a 2.5-cm-thick ring. For example, for 18 cm BPEL, only 3 points is lost when going from a 0.5-cm-thick to a 2.5-cm-thick ring.
When all of the data is analyzed together, the net effect is that there is a clear 10 points of gain for each cm of increased penetration depth, but this gain stops right around 15 cm, and the gain quickly decreases to only 2 points per cm. The 10 points per cm gain is very clearly statistically significant. The change in gain at 15 cm is also clearly statistically significant. The 2 points per cm for penetration depths of more than 15 cm is not clearly statistically significant, and might even be consistent with no gain at all.
Note that for 15 cm transition refers to BPEL minus ring thickness, so the takeaway is that there is lots of gain to be had in increasing BPEL to 15 cm, but not much after that.