Navigation Links
Just like penguins and other primates, people trade sex for resources
Date:4/10/2008

ANN ARBOR, Mich.---Female penguins mate with males who bring them pebbles to build egg nests. Hummingbirds mate to gain access to the most productive flowers guarded by larger males.

New research shows that even affluent college students who don't need resources will still attempt to trade sexual currency for provisions, said Daniel Kruger, research scientist at the University of Michigan School of Public Health.

The exchange of resources for sex---referred to by scientists as nuptial gifts---has occurred throughout history in many species, including humans, Kruger said. The male of the species offers protection and resources to the female and offspring in exchange for reproductive rights. For example, an arranged marriage can be considered a contract to trade resources.

However, the recent findings suggest that such behaviors are hard wired, and persist no matter how much wealth, resources or security that people obtain.

"It's remarkable to find these patterns in the students in the study," Kruger said. "We have seen many examples where people do this out of necessity, but we still see these tendencies in people who are already well provided for."

In addition, there are predictable, sexual differences in the types of exchanges attempted. Men are more likely to attempt to exchange investment for sex, females were more likely to attempt to exchange sex for investment, Kruger said.

For the study, researchers interviewed 475 U-M undergraduate students to discover if they attempted exchanges in reproductively relevant currencies outside of dating or formally committed relationships, and if they were aware of attempts others tried with them. While the study population was limited to students, these types of exchanges happen all over the world in different cultures and species, he said.

The majority of students were well aware of their own attempts to trade reproductive currency, Kruger said. However, if they were in committed relationships, they did not view the partnership as trading in reproductive currencies, he said.

Overall, the strategy of attempting to exchange investment for sex is only successful about 25 percent of the time, the paper found. Some of the attempted trades included: tickets to the U-M versus Ohio State game; studying assistance; laundry washed; a Louis Vuitton bag; and voice lessons among other things.

Students in the study were 18-26 years old. For exchange attempts made, 27 percent of men and 14 percent of women reported attempts to trade investment for sex, 5 percent of men and 9 percent of women reported attempts to trade sex for investment. Of exchange attempts initiated by others, 14 percent of men and 20 percent of women reported that someone else attempted to trade investment for sex with them, and 8 percent of men and 5 percent of women reported that someone else attempted to trade sex for their investment.

A sample of older individuals, especially one that is more representative of the general population, would likely report higher frequencies of experiences, Kruger said. The assumption is an older population would have more unmet needs and would be more sexually active.

In fact, Kruger said the findings were remarkable in that any exchanges were reported at all, considering the subjects' youth and affluence---in other words, they don't want for much yet they still attempt these exchanges.

"The confirmation of hypothetical predictions regarding these exchanges once again demonstrates the power of an evolutionary framework for understanding human psychology and behavior," Kruger said.


'/>"/>

Contact: Laura Bailey
baileylm@umich.edu
734-647-1848
University of Michigan
Source:Eurekalert

Related medicine news :

1. Another Reason Not to Smoke While Pregnant: Birth Defects
2. FDA Warns of Codeine Risk for Some Nursing Mothers
3. More than two-thirds of sexually active NYC youth use condoms, but other forms of birth control lag
4. One Species Genome Found Within Another
5. Claim Filed Against the Company and Nine Other Defendants in the Haifa Magistrates Court
6. Family-based treatment more effective than supportive psychotherapy in treating bulimia
7. Mother and Daughter Create Lead-Free/Safe Bibs and Solve Messy Mealtime Problems
8. Mothers Know Best: NFL Moms Team With Eddie George to Showcase a Better Way to a Healthier Lifestyle
9. Eat Seafood, See Weight Loss: Recent Study Finds Another Reason to Eat Seafood for a Fit Lifestyle
10. DTI Medical Corporation Announces Reverse Split and Other Corporate Developments
11. Chemotherapy may be culprit for fatigue in breast cancer survivors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/29/2016)... ... ... On Tuesday, April 26, 2016 members of the HomeTown Health network, a ... Deal on SB 258, the “Rural Health Care Relief” Bill. , The bill, which ... to individuals and corporations which donate directly to a “rural hospital” in Georgia, and ...
(Date:4/29/2016)... ... April 29, 2016 , ... The White House ... their loans, more information about their loan terms and accounts, and more protections ... debt, including federal and private loans, has reached $1.3 trillion, with 43 million ...
(Date:4/29/2016)... ... April 29, 2016 , ... A ... born with severe congenital diaphragmatic hernia have better survival rates if surgery is ... hernia (CDH)—a condition where the diaphragm fails to form completely, letting abdominal organs ...
(Date:4/29/2016)... ... 2016 , ... Mobility Designed is redefining mobility with their patent pending ... Crutch evenly distributes body weight from the elbow to the forearm. In consumer ... than with other crutches. , Co-founders Max and Liliana Younger were inspired to design ...
(Date:4/29/2016)... (PRWEB) , ... April 29, 2016 , ... Melanoma is the deadliest type of skin ... blame for the majority of skin cancer deaths. More than 10,000 people are expected to ... at diagnosis is 62, it is the one of the most commonly diagnosed cancers in ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... , April 28, 2016 Oramed Pharmaceuticals ... clinical-stage pharmaceutical company focused on the development of oral drug ... the upcoming PIONEERS 2016 conference, presented by Joseph Gunnar ... in New York . Nadav Kidron ... the conference. Presentation Details:   ...
(Date:4/28/2016)... New market research titled ... report that provides an overview of the Osteoarthritis,s ... identifying new targets and MOAs to produce first-in-class ... in this H1 2016 Osteoarthritis Pipeline report include ... Abiogen Pharma S.p.A., Ablynx NV, Achelios Therapeutics, Inc., ...
(Date:4/27/2016)... , April 27, 2016   ... 42% Growth in Recurring Consumable Sales  Clinical ... Mauna Kea Technologies (Euronext: MKEA, OTCQX: MKEAY) inventor of ... its sales for the first quarter ended March 31, ... the execution of its commercial strategy. First ...
Breaking Medicine Technology: