Biologiskt kön

Sex differences in viewing sexual stimuli: An eye-tracking study in men and women

Men and women exhibit different neural, genital, and subjective arousal responses to visual sexual stimuli. The source of these sex differences is unknown. We hypothesized that men and women look differently at sexual stimuli, resulting in different responses. We used eye tracking to measure looking by 15 male and 30 female (15 normal cycling (NC) and 15 oral contracepting (OC)) heterosexual adults viewing sexually explicit photos.

FoF: Testosteron stärker sinnet för rättvisa

Kvinnor som får en dos manligt könshormon beter sig mer rättvist i förhandlingar om pengar. Det visar ett nytt experiment.

Testosteron stärker sinnet för rättvisa

Testosteron gör råttor mer aggressiva och riskbenägna. Därför kan det ligga nära till hands att tro att hormo­net skulle ha ungefär samma effekt på människor.

– Men det stämmer inte, säger Christoph Eisenegger, hjärnforskare vid Universität Zürich i Schweiz.

Nature: Prejudice and truth about the effect of testosterone on human bargaining behaviour

Both biosociological and psychological models, as well as animal research, suggest that testosterone has a key role in social interactions. Evidence from animal studies in rodents shows that testosterone causes aggressive behaviour towards conspecifics. Folk wisdom generalizes and adapts these findings to humans, suggesting that testosterone induces antisocial, egoistic, or even aggressive human behaviours.

Nature: New evidence on testosterone and cooperation

In February 2010, Eisenegger et al. reported increased fair bargaining behaviour after administration of testosterone in an ultimatum game. However, unfair offers in the ultimatum game typically are rejected; thus, not only the motives for social cooperation but also the threat of financial punishment may have accounted for these effects.

Nature: A sex difference in the human brain and its relation to transsexuality

TRANSSEXUALS have the strong feeling, often from childhood onwards, of having been born the wrong sex. The possible psycho-genie or biological aetiology of transsexuality has been the subject of debate for many years. Here we show that the volume of the central subdivision of the bed nucleus of the stria terminalis (BSTc), a brain area that is essential for sexual behaviour, is larger in men than in women. A female-sized BSTc was found in male-to-female transsexuals. The size of the BSTc was not influenced by sex hormones in adulthood and was independent of sexual orientation.

Sydsvenskan: Manlig lärare gynnar elever mer

Svaga elever blir bättre med svaga lärare. Det visar en rapport som Institutet för arbetsmarknadspolitisk utvärdering, IFAU, har gjort. Men för att alla elever ska gynnas ska läraren helst vara man med goda ledaregenskaper.

Högstadielärare har allt sämre gymnasiebetyg, men enligt rapporten från IFAU spelar deras studieresultat mindre roll för elevers prestationer. Enligt rapporten kan lärare som har haft sämre inlärningsförmåga snarare få de svagare eleverna att prestera bättre i skolan.

Daily Mail: Woman inspector 'humiliated' by failing riot test wins up to £30k

For 30 years it has been used to test the fitness of officers who police riots and other outbreaks of serious public disorder.

The so-called 'shield run' involves officers covering a distance of 500 metres in less than two minutes, 45 seconds while wearing full riot gear and carrying a shield.

But when Inspector Diane Bamber, 51, failed to meet the time limit, she claimed she had been left humiliated.

SVT: Kvinnor har bättre öga för färger

Olika syn på världen ”Den där tröjan är rosa.” ”Nej, den är ju lila!” Brukar du och din partner käbbla på det här sättet? Ny forskning menar att förklaringen ligger i att kvinnor och män ser färger och nyanser på olika sätt.

Publicerad 4 september 2012 - 15:13 – Uppdaterad 4 september 2012 - 15:45
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