Genetics

William R. Clark's Are We Hardwired?: The Role of Genes in Human Behavior PDF

By William R. Clark

ISBN-10: 0195138260

ISBN-13: 9780195138269

ISBN-10: 0195178009

ISBN-13: 9780195178005

ISBN-10: 1423723228

ISBN-13: 9781423723226

Taken actually the reply to the identify query is clearly "somewhat". The extra fascinating query, as alluded to within the subtitle, is "how much"? This publication presents a good and good documented dialogue of the function of genetics in numerous features of human habit.

The issues coated comprise aggression, consuming issues, substance abuse, cognitive features and sexual choice. The claims made by way of the authors are supported by way of a number of tools. not just are statistical correlations from case stories used, yet so are reasons without delay from biochemistry.

It does not require any designated earlier wisdom, it offers the entire fabric from biology that's had to persist with the proof. this is often typically uncomplicated genetics, biochemistry and neurology. This fabric is important as the authors are very cautious to justify their claims.

To summarize i assumed this was once a great ebook. the single minor criticism i've got is couple of instances the authors appeared nearly apologetic while the impact of genetics used to be came across to be higher than a few humans it sounds as if wish them to be. whereas the booklet is written for non-experts, the truth that the authors help their claims to completely with facts makes this e-book more difficult than a customary well known ebook.

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Extra resources for Are We Hardwired?: The Role of Genes in Human Behavior

Sample text

If the vomeronasal organs are removed from these males, they show little or no attraction to females, and do not initiate mating activity. This is most likely related to the fact that the surge in testosterone levels following exposure to a female or to her pheromones is blocked in males lacking a vomeronasal organ. Not all pheromones are directed at reproductive behavior. In a very interesting study, male mice were exposed to constant stress in their cage for several days, and then moved to a new cage in a different room.

Female pheromones also alter male sexual activity. Vaginal and urinary hormones from females induce mating behavior in both hamster and mouse males. In hamsters, exposure to female pheromones triggers a burst of the male hormone testosterone, which may in turn be responsible for subsequent behavioral changes in the male. If the vomeronasal organs are removed from these males, they show little or no attraction to females, and do not initiate mating activity. This is most likely related to the fact that the surge in testosterone levels following exposure to a female or to her pheromones is blocked in males lacking a vomeronasal organ.

In mammals, pheromones are secreted in urine or sweat, often in a rapidly volatilizing liquid form, and are picked up by a special structure present in nearly all vertebrates called the vomeronasal organ. This is a tubular structure made of cartilage, found along the lower portion of the septum dividing the two halves of the nose. Although located in the nose, and clearly related to smell (olfaction) evolutionarily, 45 ARE WE HARDWIRED ? pheromone communication is actually quite distinct physiologically.

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Are We Hardwired?: The Role of Genes in Human Behavior by William R. Clark


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