Hello=)
Very interesting thread!
I thought, as a new member, I could somehow contribute to the discussion.
Below you can find, in case you haven´t seen this before, perhaps the best compilation of studies on average penis-dimensions:
(In inches: )
Let´s consider the first 2 studies, since the third one seems to be a way off the results in Wessels et al. 1996 and Schneider et al. 2001.
So, the studies state average penile size as follows:
(1)
Avg. Length – 15.74cm
Avg. Girth – 12.3cm
(2)
Avg. Length – 14.48cm
Avg. Girth – 12.4cm
If you have access to and read the studies, you will find some interesting info about the protocols used:
(1) Penile length in the flaccid and erect states: guidelines for penile augmentation - PubMed
"We performed a prospective study of flaccid and erect penile dimensions in 80 physically normal men at our institution. All patients were evaluated for sexual dysfunction but had no congenital or acquired abnormalities of the penis. Patients were excluded if they had a history of Peyronie’s disease, radical prostatectomy, urethroplasty or other penile surgery (except circumcision). Patient age and race were recorded…
All patients underwent intracavernous injection of prostaglandin El for evaluation of erectile dysfunction. After a period of privacy and self-stimulation, penile length and circumference were measured at full erection. If full rigidity was not obtained a mixture of phentolamine, papaverine and Prostaglandin El was injected to enhance erection, and measurements were repeated. Confidentiality was maintained in accordance with criteria of the committee on human research at our university…"
In Wessels et al. 1996 patients received injections of Prostaglandin E1, which is used in treatment of erectile dysfunction and has “vasodilatory properties”. So the EQ could be inflated, perhaps by up to 0,5+ cm (0.2 in), what is not uncommon with that type of drugs, however, I do not know for sure.
(2) Does penile size in younger men cause problems in condom use? a prospective measurement of penile dimensions in 111 young and 32 older men - PubMed
"We performed a prospective measurement of penile dimensions in the flaccid and erect state in 111 young men, 18 to 19 years old (group A), and, as a control, in 32 older men, 40 to 68 years old (group B). All patients were examined by one examiner (T.S.).
The young men were recruited by advertising in schools. All measurements were performed in the same room at the same temperature. As shown in Figure 1, we measured the penile length in the flaccid state from the pubic-penile skin junction to the meatus with a ruler. The prepubic fat pad was pushed to the bone at the maximum. The penile width was measured at the base and the glans penis with a caliper. Patients were left for a period in privacy and after self-stimulation (visual and manual), all measurements were repeated at full erection.
…
A full erection was defined as E5 on a scale from E0 to E5 (E0, no response; E5, full rigidity and full tumescence). All patients with an insufficient erection (E0 to E4) after visual, manual and/or pharmacologic stimulation were excluded from the study.
…
Our results are shown in Table I and Figure 2. The mean flaccid length (base to meatus) in group A (8.60 cm) and group B (9.22 cm) was signifi- cantly different, with longer penises in group B. The mean erect length (base to meatus) was 14.48 cm in group A and 14.18 cm in group B…"
So, there was a self-selection bias, participants (relevant to the compilation) were 18-19 years old, probably with good EQ, which was controlled with a subjective scale. BUT, let´s be realistic and consider, that it is quite difficult to maintain or even get a near your maximum erection while measured by a doctor, on the other hand the difference could not be that great, since they should have a good EQ to qualify as E5 - we can add something like 0.5-0.7cm to their result of 14,48cm.
In my opinion, based on these studies, it is safe to assume, that the average length is about 15-15.5cm (or less) without any pharmacologic assistance.
Same is true regarding girth measurements:
Wessels et al. 1996 has somewhat inflated scores, because of the drug used and Schneider only measured width:
"…
The mean erect width at the base was significantly different, with 3.95 cm in group A and 3.50 cm in group B. A comparison of the erect width of the glans was also significantly different, with a mean erect width in group A of 3.49 cm and 3.32 cm in group B."
The score of 12.4cm is based on the width of 3.95cm, assuming a penis as a perfect cylinder, which is clearly not the case, since it is a bit “flat” and therefore will have a greater width with the same circumference. It means, that the girth of 12,4cm is probably inflated as well and it was measured at the base, so the average MEG would be lower than 12.3-12.4cm, like something around 12cm.
So the average seems to be 15-15.5cm BPEL and 12-12.2cm MEG, or less.
Length: 5.9-6.1 in, Girth: 4.7-4.73 in.
But, we can try to verify the data, using a somewhat different approach.
Since a male penis is a product of sexual selection, we can study female preferences .
I think, the best way to do so is not in relying on some subjective “measurements” by females, but in using some hard (lol) facts, namely – preferred dildo sizes=)
In my opinion, the US-market fits quite well, since it has big population size, good income to afford the toys and usage of these is more or less accepted, meaning an average woman (not only „sex obsessed”) could buy it.
So, let´s take a look on top-5 Amazon bestsellers in the category:
http://www.amaz on.com/Best-Sel … v_hpc_4_3777811
Some state length of 9 inches and so on, but you must look at “incertable length”. I just copy and paste:
1) insertable to 5.13", 3.5" in girth
2) 6.25" insertable length, 2.25" max insertable diameter
3) Girth: 5.0" Insertable length 6.25"
4) Insertable Length - 5.5 inches, Girth - 4.75 inches
5) inside diameter of approx. 1.5 inches, and 6.5 insertable
There are some bigger … samples in top-10, but these are the bestsellers.
Consider, that a person will likely find a sample more attractive if it is around the average or a bit larger. And, of course, you have to compare it with your actual length, that you are able to use during intercourse – BPEL is a good approximation of it (if a person is not severely overweight)
In my opinion, we could conclude, that the average stats of BPEL: 5.9-6.1 in, Girth: 4.7-4.73 in. Are pretty close to reality=)
As for our somewhat larger stats on Thunders place, I think it is a self-selection bias and only 2 or even 1 week of PE could inflate the size a bit, due to better EQ, more increased tissue elasticity and inflammation - so you have to pause your PE for at least a week to get accurate measurements, IMHO.
Sorry for my English=)