Monday, 8 January 2018

Why are Women less Confident than Men? Part 6

So where does all of this start? If women are competent and hardworking enough to outpace men in school, why is it so difficult to keep up later on? As with so many questions involving human behaviour, both nature and nurture are implicated in the answers.

The very suggestion that male and female brains might be built differently and function in disparate ways has long been a taboo subject among women, out of fear that any difference would be used against us. For decades—for centuries, actually—differences (real or imagined) were used against us. So let’s be clear: male and female brains are vastly more alike than they are different. You can’t look at scans of two random brains and clearly identify which is male and which is female. Moreover, each individual’s confidence level is influenced by a host of genetic factors that do not seem to have anything to do with his or her sex.

Girls lose confidence, so they quit competing in sports, thereby depriving themselves of one of the best ways to regain it.

Yet male and female brains do display differences in structure and chemistry, differences that may encourage unique patterns of thinking and behavior, and that could thereby affect confidence. This is a busy area of inquiry, with a steady stream of new—if frequently contradictory, and controversial—findings. Some of the research raises the intriguing possibility that brain structure could figure into variations between the way men and women respond to challenging or threatening circumstances. Take, for example, the amygdalae, sometimes described as the brain’s primitive fear centers. They are involved in processing emotional memory and responding to stressful situations. Studies using fMRI scans have found that women tend to activate their amygdalae more easily in response to negative emotional stimuli than men do—suggesting that women are more likely than men to form strong emotional memories of negative events. This difference seems to provide a physical basis for a tendency that’s been observed in behavioral studies: compared with men, women are more apt to ruminate over what’s gone wrong in the past. Or consider the anterior cingulate cortex. This little part of the brain helps us recognize errors and weigh options; some people call it the worrywart center. And, yes, it’s larger in women. In evolutionary terms, there are undoubtedly benefits to differences like these: women seem to be superbly equipped to scan the horizon for threats. Yet such qualities are a mixed blessing today.

You could say the same about hormonal influences on cognition and behaviour. We all know testosterone and oestrogen as the forces behind many of the basic, overt differences between men and women. It turns out they are involved in subtler personality dynamics as well. The main hormonal driver for women is, of course, oestrogen. By supporting the part of the brain involved in social skills and observations, oestrogen seems to encourage bonding and connection, while discouraging conflict and risk taking—tendencies that might well hinder confidence in some contexts.

Testosterone, on the other hand, helps to fuel what often looks like classic male confidence. Men have about 10 times more testosterone pumping through their system than women do, and it affects everything from speed to strength to muscle size to competitive instinct. It is thought of as the hormone that encourages a focus on winning and demonstrating power, and for good reason. Recent research has tied high testosterone levels to an appetite for risk taking. In a series of studies, scientists from Cambridge University followed male traders at a London hedge fund, all high rollers (with annual bonuses greater than $5 million). Using saliva samples, the researchers measured the men’s testosterone levels at the start and end of each day. On days when traders began with higher levels of testosterone, they made riskier trades. When those trades paid off, their testosterone levels surged further. One trader saw his testosterone level rise 74 percent over a six-day winning streak.

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