ฮอร์โมนเพศชายสูงยิ่งมีความซื่อสัตย์มาก ขาดแคลนทำให้เป็นโรคอ้วนและเบาหวาน

bangkokbiznews120819_001ฮอร์โมนเพศชายเทสโทสเตอโรน ซึ่งทราบกันดีว่า เกี่ยวพันกับความก้าวร้าว และดุดันของบุรุษเพศ ถูกพบด้วยว่า กลับมีอิทธิพลควบคุมพฤติกรรมในสังคมและความซื่อสัตย์ต่อกันด้วย

นักวิจัยมหาวิทยาลัยแห่งบอนน์ของเยอรมนี ได้พบในการศึกษากับกลุ่มคน 2 กลุ่ม จำนวนเท่ากัน โดยกลุ่มหนึ่งให้ทาเจลฮอร์โมนเทสโทสเตอโรน ส่วนอีกกลุ่มหนึ่ง ให้ยาหลอก แล้วให้ทั้งหมดแต่ละคนทอดลูกเต๋าแต่เพียงลำพัง ผู้ที่ทอดได้แต้มมาก จะเอาไปแลกเป็นเงินได้

จากการศึกษาคนทั้ง 2 กลุ่ม นักวิจัยพบว่ากลุ่มคนที่ทาเจลฮอร์โมน จะมีความซื่อสัตย์สูงกว่าคนอีกกลุ่มหนึ่ง พวกเขาอธิบายว่า เพราะผู้ที่ระดับฮอร์โมนสูงก็จะเกิดความรู้สึกภูมิใจในตนเองสูงขึ้น และช่วยยกภาพลักษณ์ตนเองอีกด้วย ทางมหาวิทยาลัยเวยน์ สเตทของอเมริกา ก็ศึกษาพบว่า นอกจากมันช่วยส่งเสริมความซื่อสัตย์แล้ว ฮอร์โมนเพศยังส่งเสริมในอีกหลายเรื่อง อย่างผู้ที่มีระดับฮอร์โมนสูงสุด จะเป็นคนช่างพูดช่างจากว่า ควบคุมการสนทนาได้ดีกว่า และเข้ากับสาว ๆ ได้ดี

ยิ่งกว่านั้นยังพบว่า ผู้ที่มีระดับฮอร์โมนนี้พร่อง อาจจะมีส่วนเกี่ยวพันกับโรคเบาหวานและโรคอ้วนได้.

 

ที่มา :  ไทยรัฐ 4 มกราคม 2556

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Testosterone Increases Honesty, Study Suggests

Oct. 10, 2012 — Testosterone is considered THE male hormone, standing for aggression and posturing. Researchers working with Dr. Armin Falk, an economist from the University of Bonn, have now demonstrated that this sex hormone surprisingly also fosters social behavior. In play situations, subjects who had received testosterone clearly lied less frequently than individuals who had only received a placebo.

The results have just been published in the Public Library of Science’s international online journal PLoS ONE.

The hormone testosterone stands for typically male attributes — it fosters the forming of the sexual characteristics, increases libido and muscle building. Women also have this sex hormone, but to a much lesser extent. “Testosterone has always been said to promote aggressive and risky behavior and posturing,” reports Prof. Dr. Bernd Weber, a neuro-scientist from the Center for Economics and Neuroscience (CENS) at the University of Bonn. More recent studies indicate, however, that this sex hormone also fosters social behavior.

Cause-and-effect issues remains unresolved

“The disadvantage of many studies is, however, that they only correlate their subjects’ testosterone level with their behavior,” explains lead author Dr. Matthias Wibral, adding that this approach only reflects statistical links while not providing any insights into the causes for the behavior. “For testosterone does not only influence behavior; behavior, in turn, also influences hormone levels.” Consequently, the CENS scientists were looking for an experimental approach that would also allow deducing cause and effect.

Bonn researchers using new approach

The scientists recruited a total of 91 healthy men for a behavioral experiment. Out of this group of subjects, 46 were treated with testosterone by applying it to the skin in gel form. On the following day, endocrinologists from the Bonn University Hospitals checked whether the blood testosterone levels were indeed higher in these subjects than in the placebo group. The other 45 test subjects only received a placebo gel. “Neither the subjects themselves nor the scientists performing the study knew who had received testosterone and who hadn’t,” reports Dr. Wibral. This was done to prevent behaviors from potentially being affected.

Games of dice with cheating option

This was followed by the behavioral experiments. The test subjects played a simple game of dice in separate booths. The higher their scores, the higher the amounts of money they received as a reward. “These experiments were designed such that the test subjects were able to lie,” reports Prof. Weber. “Due to the separate booths, nobody knew whether they were entering their real scores into the computer, or higher ones in order to get more money.” However, the scientists were able to determine later whether the various test subjects had cheated or not. “Statistically, the probability for all numbers on the dice to occur is identical,” explains the neuroscientist. “So, if there are outliers in the higher numbers, this is a clear indication that subjects have been cheating.”

Test subjects with higher testosterone levels lied less

The researchers compared the results from the testosterone group to those from the control group. “This showed that the test subjects with the higher testosterone levels had clearly lied less frequently than untreated test subjects,” reports the economist Prof. Dr. Armin Falk, who is one of the CENS co-directors with Prof. Weber. “This result clearly contradicts the one-dimensional approach that testosterone results in anti-social behavior.” He added that it is likely that the hormone increases pride and the need to develop a positive self-image. “Against this background, a few euros are obviously not a sufficient incentive to jeopardize one’s feeling of self-worth,” Prof. Falk reckons.

Lies are widespread in personal life and business

Great taboos are attached to the phenomenon of lying. The Christian 8th Commandment, e.g., forbids “bearing false witness.” Prof. Falk says, “However, lies play a great part both in the business world as well as in personal life.” He adds that people frequently do not just lie to their own advantage, but also in order to protect or benefit others. This type of behavior and its economic effects had been studied often. “However, there are very few studies on the biological causes of lying,” the Bonn economist explains. “In this regard, this study has allowed us to make a big step forward.”

Story Source:

The above story is reprinted from materials provided byUniversity of Bonn, via AlphaGalileo.

Journal Reference:

  1. Wibral M, Dohmen T, Klingmüller D, Weber B, Falk A.Testosterone Administration Reduces Lying in Men.PLoS ONE, 2012 DOI: 10.1371/journal.pone.0046774

SOURCE : sciencedaily.com

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จับคนโกหกได้ โดยอาศัยลูบจมูกดู ผู้พูดปด จะมีจมูกร้อนผ่าวผิดปกติ

Feeling the heat: Anxiety caused by telling lies makes the tip of the nose grow warm, the scientists claim

Feeling the heat: Anxiety caused by telling lies makes the tip of the nose grow warm, the scientists claim

การพูดปดไม่อาจจะทำให้จมูกคนผู้นั้นยื่นยาวออกมา เหมือนอย่างในนิทานของฝรั่งได้ แต่มันก็ทำให้จมูกของเขาร้อนผ่าวขึ้นมา

นักวิทยาศาสตร์มหาวิทยาลัยกรานาดา อ้างว่าพบในการศึกษาว่าเป็นเพราะคนผู้นั้นรู้สึกวิตกกังวลมากขึ้น พร้อมกับแนะนำว่า ถ้าหากใครไม่อยากให้คนเห็นพิรุธ ก็ควรจะพยายามข่มใจไว้อย่างหนัก พวกเขาศึกษาโดยใช้กล้องถ่ายภาพความร้อน ถ่ายภาพดูด้วย

นักวิจัยเชื่อว่าเหตุที่อุณหภูมิที่จมูกสูงขึ้น เพราะอารมณ์ที่พุ่งขึ้น เช่นเดียวกับที่เกิดบริเวณแถบจุดต่ำสุดขอบเบ้าตาและมุมในลูกตา.

ที่มา : ไทยรัฐ 10 ธันวาคม 2555

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The Pinocchio effect: Researchers at the University of Granada found that the temperature of the nose rises as a person becomes anxious

The Pinocchio effect: Researchers at the University of Granada found that the temperature of the nose rises as a person becomes anxious

Feeling the heat? Why a hot nose is the tell-tale sign of a liar

  • Scientists from the University of Granada used thermal imaging to prove anxiety makes the nose heat up
  • The academics claim the technique can also detect sexual desire and arousal in men and woman

By MAIL FOREIGN SERVICE

PUBLISHED: 17:38 GMT, 23 November 2012 |

Contrary to what you may say to your children, telling a lie doesn’t, of course, make your nose grow like Pinocchio’s. But it does make it hotter.

Scientists claim that a rise in anxiety produced by lying will increase the temperature of the tip of your nose.

And if you’re worried that your fib will be uncovered, they also suggest a way of cooling the nose  down – making ‘a great mental effort’.

The scientists, from the University of Granada, discovered the phenomenon by using thermal imaging cameras to monitor volunteers.

They have called it ‘The Pinocchio Effect’,  in honour of the 19th century Italian tale of the wooden puppet whose nose grew when he failed to tell the truth.

In their doctoral thesis, released yesterday, Emilio Gómez Milán and Elvira Salazar López suggest that the temperature of the nose increases or decreases according to mood, as does the orbital muscle area in the inner corner of the eyes.

The scientists also claim thermal imaging can detect sexual desire and arousal in men and women, indicated by an increase in temperature in the chest and genital areas.

And the technique also allowed the pair to produce thermal footprints  –  body patterns with specific temperature changes – for aerobic exercise and distinct types of dance, such as ballet.

They explained: ‘When someone dances Flamenco, the temperature in their buttocks lowers and it rises in their forearms.

‘This is the thermal footprint for Flamenco, although each type of dance has its own.’

The pair reached their conclusions after discovering that when the volunteers lied about their feelings, the brain’s insular cortex was altered.

They said: ‘The insular cortex is involved in the detection and regulation of body temperature, so there is a large negative correlation between the activity of this structure and the magnitude of the temperature change.

‘The more activity in the insular cortex (the higher the visceral feeling), lower heat exchange occurs, and vice versa.’

SOURCE : dailymail.co.uk