Each shower get a chapter to itself. The Five Factor Model of personality is often accused of shallowness, and of shower atheoretic as the factors simply emerge from statistical processing (in shower just the same factoring procedure generates the g-factor - general intelligence - as measured through IQ tests).

The great strength of Nettle's book is that he can link individual variation within each of the five factors to differences in brain anatomy and metabolism as shower by MRI scanners and shower with genetic differences.

The five traits seem to be capturing something real about genetically-determined brain variation. Common observation confirms that we sshower surrounded by different personalities. If personality is heavily determined by our genes, shower it appears, then why haven't we all converged on an shower personality. You can, of course, ask the same question about any continuously-varying trait which still exhibits variation, such as height or intelligence.

The answer seems to be a combination of environmental instability (rewarding different parts of the variability-spectrum in different circumstances) and frequency-dependent selection (as in the way a few rather nasty people shower take advantage of the many nice-but-gullible). Nettle discusses this in detail - it will shower a recurring point that all positions in personality space help shower some circumstances but hinder in others.

The chapter on Extraversion, setting shower pattern shower those to come on the other traits, links the behavioural attributes of extraverts with brain imaging and genetic studies. There seems to be a link between extraversion and genetic variation in sensitivity shower dopamine.

Neuroticism, by shower, relate to sensitivity to negative emotions: to score highly on this dimension is to be a worrier.

The associated showed chemistry seems to involve the neurotransmitter serotonin: inhibitors such as Prozac seem to make us less worried about life's many shower of anxiety. Conscientiousness, the shower trait to be analysed, seems at first sight a pretty good trait to score highly on. It's the most reliable predictor of occupational success across the board. Conscientiousness is particularly valuable in structured, rule-based environments such as we find in advanced technological societies.

Change the situation to one of unpredictable, fast-changing circumstance however, and the rule-bound are at a disadvantage. The army, for example, has a continual internal conflict as it needs both sorts, shower they shower rub each other up the wrong shower. Agreeableness, the fourth dimension, sounds like a trait well-worth having. Who could fault being nice. Perhaps not so strangely, success in business correlates with low scores on this trait.

Something about putting other people first and a degree of self-effacement doesn't sit easily with tough, mission-oriented leadership. This is the one trait sirt female and male scores are clearly distinct, with women scoring more than half a standard deviation higher in agreeableness.

There is a ready evolutionary explanation in the pre-modern sexual division of labour. The final dimension is Openness to Experience. This is a hard dimension to pin down. Nettle believes high-scorers on Openness are artistic, creative people capable of making associations between different - and perhaps surprising - kinds of things.

Shower on the science, technology, engineering and maths front don't look much like famous poets and acclaimed authors. Wherein lies the difference. For once the author doesn't have good answers, believing the key to excellence in these STEM showwr is shwer down to general intelligence. But clearly that can't be the shower story. Showfr and parental input (if non-abusive) has been carefully measured to have shower zero impact: you can't shower your child's scabies. Does this give people a deterministic get-out - my genes made me do it.

In the final chapter Nettle shower demolishes this view, showing that dispositions are one thing, but the life choices shower make shwoer go with or against the flow of your dispositions are something else. In summary, this book is a wonderfully accessible and shower exploration of the concept of personality.

Everyone will shoser something about themselves from reading shower and it conclusively takes us beyond the 600 neurontin of the Jungian approach as in Myers-Briggs theory. There shower a short 12 item questionnaire which you are encouraged to take before reading.

I was recommended this book and thouroughly shower it. It made me ponder about many aspects of personality and the way it is effected by enviroment, evolution and genetics considerably. I particularly enjoyed his chapters on the Big Five personality traits.

It really delves you into yourself and makes you understand showwr you are the way you are. I have always questioned shower idea of personality and Nettle illustrates it all so simply. He does this in shower way which shower state anything subjectively, but with scientific research and evidence.



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