Playfulness may help adults attract mates, study finds
2012-08-03
(Press-News.org) Why do adults continue to play throughout their lives while most other mature mammals cease such behavior? According to researchers at Penn State, playfulness may serve an evolutionary role in human mating preferences by signaling positive qualities to potential long-term mates.
"Humans and other animals exhibit a variety of signals as to their value as mates," said Garry Chick, professor and head of the Department of Recreation, Park and Tourism Management. "Just as birds display bright plumage or coloration, men may attract women by showing off expensive cars or clothing. In the same vein, playfulness in a male may signal to females that he is nonaggressive and less likely to harm them or their offspring. A woman's playfulness, on the other hand, may signal her youth and fertility."
Chick and colleagues Careen Yarnal, associate professor of recreation, park and tourism management, and Andrew Purrington, lecturer in the Department of Recreation, Park and Tourism Management, expanded on a previous survey that included a list of 13 possible characteristics that individuals might seek in prospective mates. To that original list, they added three new traits: "playful," "sense of humor" and "fun loving." The authors gave the survey to 164 male and 89 female undergraduate students, ages 18 to 26.
Of the 16 items, "sense of humor," "fun loving" and "playful" ranked second, third and fourth, respectively, among traits that females sought in males. Males rated three traits--"physically attractive," "healthy," and "good heredity"--that are characteristic of female fertility as significantly more desirable than females rated them in males.
The team reported its results online in this month's issue of the American Journal of Play.
"The fact that the subjects tended to rank 'sense of humor,' 'fun loving' and 'playful' at or near the top of the list of 16 characteristics does not mean that the mates they have selected or will select will actually exhibit these traits," said Chick. "In addition, the results may be skewed by the fact that most of the study subjects were college students from a western culture. Despite these caveats, it seems to us that signaling one's virtues as a potential long-term mate through playfulness is not far-fetched. Our results suggest that adult playfulness may result from sexual selection and signal positive qualities to potential long-term mates."
### END
ELSE PRESS RELEASES FROM THIS DATE:
2012-08-03
Washington, D.C.—Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the universe is expanding at an accelerating rate. But there is still too little known about the specifics of the processes by which these supernovae form. New research led by Carnegie's Stella Kafka identifies a star, prior to explosion, which will possibly become a type Ia supernova. The work will be published by the Monthly Notices of the Royal Astronomical Society and is available online. ...
2012-08-03
Peter de Groot (Biology) hopes his recent finding confirming the extinction of the Javan rhinoceros in Vietnam pushes the public to protect the last remaining group of these prehistoric creatures living in Indonesia.
"We still have a chance to save the species but before we do anything, we have to determine the profile of the remaining group," he says.
Dr. de Groot, Peter Boag (Biology) and colleagues confirmed the demise of the Javan rhinoceros population living in Vietnam by analyzing animal dung collected with the assistance of special dung detection dogs. Using genetic ...
2012-08-03
AMES, Iowa – By blending optical and atomic force microscope technologies, Iowa State University and Ames Laboratory researchers have found a way to complete 3-D measurements of single biological molecules with unprecedented accuracy and precision.
Existing technologies allow researchers to measure single molecules on the x and y axes of a 2-D plane. The new technology allows researchers to make height measurements (the z axis) down to the nanometer – just a billionth of a meter – without custom optics or special surfaces for the samples.
"This is a completely new type ...
2012-08-03
HEIDELBERG, 3 August 2012 – Intellectual disability due to Fragile X and Down syndromes involves similar molecular pathways report researchers in The EMBO Journal. The two disorders share disturbances in the molecular events that regulate the way nerve cells develop dendritic spines, the small extensions found on the surface of nerve cells that are crucial for communication in the brain.
"We have shown for the first time that some of the proteins altered in Fragile X and Down syndromes are common molecular triggers of intellectual disability in both disorders," said ...
2012-08-03
Researchers at Mount Sinai School of Medicine, the University of Manchester, and the MD Anderson Cancer Center have found a new role for an oncogenic signaling pathway in embryonic stem cell (ESC) self-renewal and in reprogramming adult cells into an ESC-state, which will aid in the development of future cancer therapies.
The findings promote the understanding of the self-renewal mechanism in embryonic stem cells and provide insight into the role of Aurka, an oncoprotein that is amplified in several human cancers. The research is published in the August 3rd issue of ...
2012-08-03
Durham, NC — A new study of North American songbirds reveals that birds that live with fluctuating weather are more flexible singers.
Mixing it up helps birds ensure that their songs are heard no matter what the habitat, say researchers at Australian National University and the National Evolutionary Synthesis Center.
To test the idea, the researchers analyzed song recordings from more than 400 male birds spanning 44 species of North American songbirds — a data set that included orioles, blackbirds, warblers, sparrows, cardinals, finches, chickadees and thrushes.
They ...
2012-08-03
When a damaging earthquake struck the area of L'Aquila in central Italy in 2009, it was the latest in the region's long history of strong and persistent quakes. The rich recorded history of settlement in the area, along with oral traditions, archaeological excavations, inscriptions and medieval texts, and offer insight into how often the region might expect destructive earthquakes. But according to a new study by Emanuela Guidoboni and colleagues, the historical record on ancient and medieval earthquakes comes with its own shortcomings that must be addressed before the ...
2012-08-03
Researchers at the European Molecular Biology Laboratory (EMBL) in Grenoble, France, have determined the detailed 3-dimensional structure of part of the flu virus' RNA polymerase, an enzyme that is crucial for influenza virus replication. This important finding is published today in PLoS Pathogens. The research was done on the 2009 pandemic influenza strain but it will help scientists to design innovative drugs against all the different influenza strains, and potentially lead to a new class of anti-flu drugs in the next 5-10 years.
The scientists focused on the endonuclease ...
2012-08-03
Despite the current and rapid melting of the Greenland Ice Sheet, it remains far from certain just when we will have reached a point when scientists will be able to predict its disappearance. Recent research conducted by the University of Copenhagen in conjunction with the Technical University of Denmark (DTU) and the Danish National Survey and Cadastre (KMS) in collaboration with an international team of scientists reports that this is not the first time in recent history that the ice sheet has been in retreat and then stabilised again. The researchers' results have just ...
2012-08-03
The greatest risk factor for Alzheimer's disease (AD) is advancing age. By age 85, the likelihood of developing the dreaded neurological disorder is roughly 50 percent. But researchers at the University of California, San Diego School of Medicine say AD hits hardest among the "younger elderly" – people in their 60s and 70s – who show faster rates of brain tissue loss and cognitive decline than AD patients 80 years and older.
The findings, reported online in the August 2, 2012 issue of the journal PLOS One, have profound implications for both diagnosing AD – which currently ...
LAST 30 PRESS RELEASES:
[Press-News.org] Playfulness may help adults attract mates, study finds