A new study in the Psychological Science finds that a short-term rise in testosterone – as might occur when in the presence of an attractive potential mate, or during competition – shifts the way men think, encouraging them to rely on quick, intuitive, and generally less accurate, judgements, rather than engaging in careful, more deliberate thought.
Aggression is not just about testosterone, it’s about where it acts in the body and the brain. Your baseline level of testosterone isn’t always going to predict how you’re going to behave – it depends on what’s going on in the brain with androgen receptors.
Since the first stock market in Amsterdam in the 17th century, trading floors have been dominated by men. It turns out testosterone may be responsible for some of the dramatic bubbles and crashes we have seen since.
Testosterone levels influence whether men become engaged in a committed, monogamous relationship or not. Previous research has shown links between relationship status and testosterone in men, specifically that monogamously – or monoamorously – partnered men have lower testosterone than single men.
Studies find that female meerkats can produce up to twice as much testosterone as their male counterparts. Their unusual hormone levels fuel their bullying behavior, but at a cost. There are other species in which females rule, but meerkats are the only known animals in which traditional sex hormone patterns are reversed.
An index finger that is relatively short compared to the ring finger indicates that one has been exposed to a lot of testosterone in utero, whereas a relatively long index finger suggests a lower exposure to testosterone in the womb. High levels of testosterone generally correlate with superior abilities on tasks that men usually perform better, such as various spatial tasks like directional sense, Conversely, low levels of testosterone are associated with better abilities in verbal memory tasks, such as remembering lists of words.
Despite current efforts of the European commission to combat gender issues with respect to gender equality, men and women are different in several important aspects. These aspects include cognitive functioning and behavioral traits. Some of these may be socially induced, but scientists have showed on intact animals that other factors such as genetics and gender itself are mostly responsible for the sex differences in behavior and cognition.
Parabens are p-hydroxybenzoic acid ester compounds widely used as preservatives in foods, cosmetics, toiletries and pharmaceuticals. These compounds exert a weak estrogenic activity. Propyl paraben also adversely affects hormonal secretion and male reproductive functions. In a study on male rats, serum testosterone concentration decreased in a dose-dependent manner and the decrease was significant in the group that received the highest dose.
Approximately eight million U.S. drivers engaged in extreme examples of road rage, including purposefully ramming another vehicle or getting out of the car to confront another driver. Male and younger drivers ages 19-39 were significantly more likely to engage in aggressive behaviors. For example, male drivers were more than three times as likely as female drivers to have gotten out of a vehicle to confront another driver or rammed another vehicle on purpose.
Testosterone might be involved in explaining why men have a greater risk of heart attacks than women of similar age.
Hormone levels have been shown to be affected by trading outcomes, and males are more sensitive to this effect than females. This has led to policy makers, academics and the press to call for a re-balancing of gender ratios in financial markets to make them more stable.