Study: Evolution May Have Driven Humans Towards Bigger Penis Sizes
April 10, 2013 1:01 PM
(Source: New Line Cinema)
Bigger penises are especially important to bigger women
While human evolution was initially thought to have stalled, recent studies
. For example a recent Chinese
showed that the Tibetan population developed a series of genes as recently as 3,000 years ago to help deal with low oxygen levels. So what other ways might mankind be evolving? That's a topic a number of research teams have
begun to actively explore
, using the prowess of
and other advanced techniques.
I. Big Women Love Big Genitals
Sexual competition is thought to be a key evolutionary driver via natural selection. A new study by the
Australian National University
in Canberra eschewed advanced genetic techniques for a lower tech psychological solution. It exposed 100 Australian women to computer-generated images of potential male "mates" (as in
mates) of different physiques, heights, and
. The women were asked to rate each man. Researchers both considered the response and the time it took to give it; the researchers reasoned that a long pause before a positive response meant that the women were admiring the particular male form.
Bigger women were most attacted to bigger penises (click for NSFW version). [Image Source: PNAS]
The researchers then correlated their rankings to the various key traits -- height, physique, and penis size. The digitally rendered flaccid genitalia (penises) stretched 2 to 5 inches.
The results were intriguing. Somewhat unexpectedly, the demographic of females with the strong preference for large male genitalia were women who were heavier than expected for their height. But when viewing heavier
, penis size did not make a major difference in attraction.
Overall, the researchers found that women were attracted to taller, more athletic builds. And the taller and more athletic the man was, the more important a long penis became to the females. In other words, the females' general preference was for a tall, athletic male with a long penis.
The findings of the study were
[abstract] in the prestigious peer-reviewed science journal
Proceedings of the National Academy of Sciences (U.S.)
II. Mankind's Big, Hearty Penises are a Rarity in the Animal World
Professor Brian Mautz
, the evolution and sexual preference researcher at the Australian University who led the study acknowledges his study contradicts past studies that showed no correlation between penises size and attraction among females. But he argues those past studies were prone to bias and self-censorship. A key weakness, he suggests, in the past studies on the topic was reliance on direct questioning about preferences in an abstract sense, where as the new study relied on direct visuals and measured reactions.
The researcher suggests that penis size likely played an even more important role in natural selection in early humans, who wore less clothing. Comments Professor Mautz, "Before clothing, the nonretractable human penis would have been conspicuous to potential mates. Our results support the hypothesis that female mate choice could have driven the evolution of larger penises in humans."
But the professor also says that there are some studies that suggest possible mechanisms to explain why women are attracted to larger penises. He comments, "Some studies indicate that preference for a larger penis might arise because penis size is associated with higher rates of vaginal orgasm. [But] regardless of the exact mechanism, however, our results show that female mate choice could have played a role in the evolution of the relatively large human penis."
Bigger penises have been linked to higher orgasm rates. [Image Source: Castle Rock Ent.]
This might explain why penises are so large relative to the body size and important, compared to other creatures. Genitals, in general, are present in many creatures and are thought to have evolved as a means of improving fertilization. However, many creatures either lose their genitals during mating or have relatively smaller genitals.
Gorilla erect penises are only a quarter of the sizes of humans'. [Image Source: Natural Habitat]
For example, a Gorilla, despite being bulkier than humans has an average erection only 1.25-inches long -- about a fourth of the average human erection length. And some insects, including honeybees, have penises that explode or break off inside the female after mating. The broken penis prevents other males from mating with the female.
Humans also differ from their primate ancestors in that they lost spiny bone-like structures found in most other primates’ penises. In our primate relatives those
spiny penis structures
help the male penetrate the dried penis secretions of other males to increase the chance of fertilization during a group sex/group mating scenario.
"Game reviewers fought each other to write the most glowing coverage possible for the powerhouse Sony, MS systems. Reviewers flipped coins to see who would review the Nintendo Wii. The losers got stuck with the job." -- Andy Marken
Neanderthal Genome is Finished and Free
March 21, 2013, 8:11 AM
Study: Human Evolution Forced by Chaotic Landscape
December 27, 2012, 1:45 PM
Study: How Human Evolution Caused us to Lose Our Spiny Penises
March 10, 2011, 9:30 AM
Artificial Penis Research Hops Ahead in Rabbits, Human Tests to Begin
November 10, 2009, 7:12 AM
Life in the Fast-lane: Human Evolution Accelerating
December 12, 2007, 3:18 PM
Cyber Hackers Threaten Security of Lifesaving Medical Devices
October 19, 2016, 8:09 AM
Innovative Neurotechnology in Sound Therapy Reduces High Blood Pressure and Migraines
October 16, 2016, 5:00 AM
Researchers Move Closer to Breakthrough Gene Therapy to Cure Sickle Cell
October 14, 2016, 5:00 AM
Keytruda: A breakthrough treatment to increase survival rates for lung cancer patients
October 12, 2016, 5:00 AM
CDC Warning about Record High Increases in 2016 for Polio-like Illness causing Paralysis
October 9, 2016, 5:00 AM
Hypertension in children impacts cognitive performance
October 5, 2016, 5:00 AM
Most Popular Articles
Car Insurance - The Hidden Discriminatory Practise
October 18, 2016, 5:00 AM
Problems with Windows 10 – Update Now
October 15, 2016, 7:30 AM
Is Razer Blade Stealth Laptop For You?
October 16, 2016, 5:00 AM
Tesla Event Pushed to Wednesday
October 17, 2016, 5:00 AM
Smart Technology Mood Collar To Understand Your Dog’s Emotions
October 17, 2016, 5:00 AM
Latest Blog Posts
Mac Users, Try this if Your Mac is Infected?
Oct 23, 2016, 7:00 AM
Tips to Prevent Smartphones From Overheating:
Oct 22, 2016, 5:00 AM
Nasa Flies Drones at Nevada Airport
Oct 21, 2016, 8:21 AM
T-Mobile Data Problems
Oct 20, 2016, 10:17 AM
Annoying Apple Watch Problems and How to Fix Them
Oct 20, 2016, 5:00 AM
Your Mail May Soon Be Delivered By Robot
Oct 19, 2016, 9:34 AM
2018 Jeep Wrangler Prototype Sells At Junkyard
Oct 18, 2016, 5:00 AM
Samsung Shines with Gold Edition Tablet
Oct 17, 2016, 9:24 AM
Tesla Hints Mysterious Product Debut for October 17th
Oct 16, 2016, 10:14 AM
Samsung Galaxy Note 7 Phones on US flights
Oct 15, 2016, 5:00 AM
Comcast Fined $2.3 Million For Unconfirmed Services Charged To Customers
Oct 14, 2016, 5:00 AM
“American singer / songwriter “Bob Dylan is awarded 2016 Nobel Prize in Literature.
Oct 13, 2016, 10:33 AM
Battery Defect in Medical Device
Oct 12, 2016, 5:00 AM
IBM Bolsters Social Services Sector With Technology Grants
Oct 11, 2016, 5:00 AM
Scientists Sound Alarm on Climate but US Still Toys With Skepticism
Oct 10, 2016, 5:00 AM
IMEX America Trade Show
Oct 9, 2016, 10:00 AM
Phone Wars – Google VS Samsung Free Gifts on Purchase
Oct 6, 2016, 5:00 AM
Member of Parliament’s opposition car exploded in Tbilist capital of Georgia
Oct 5, 2016, 2:52 PM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information