LOG-02 (Worry)

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68% of the sampled population had the version of the gene that contributes to "anxiety-related traits". How is this allele able to persist (not be removed by natural selection)? There is some evidence that moderately anxious or depressed people may:

Avoid excessive danger Receive more parental care as infants Have sex more often, and therefore potentially leave more offspring with that trait Change behaviors that led to failure

"The common feature of all harm avoidance is":

Emotional sensitvity

"Harm avoidance is a blanket trait that includes":

Fear Depression Inhibition Anxiety Hostility Tiredness Shyness

To what extent do genes affect harm avoidance? That is, how much of the genetic variation within the population affects variation for the trait?

Genes account of about 40-90% depending on the study

Milk

May decrease dreaming Is high in tryptophan Can contribute to relaxation

What is the evidence that serotonin affects harm avoidance?

Prozac specifically affects the serotonin transporter protein and decreases neuroticism in those who suffer from it People that make less serotonin transporter protein score higher on harm avoidance test than those that make more

Which of the following appear to contribute to a long term elevation of mood?

Regular participation in things one enjoys

What is true of anxiety and depression (choose two that best represent the conclusions of the authors)?

They sometimes occur together They appear to be caused by the same genes

Genes affect fear avoidance. Genes affect hair color. Is it correct to say, then, that genes 'determine' these traits? Complete this sentence: Prozac is to fear avoidance as ____ is/are to gray hair.

dye

"inhibition, what most of us call _____, appears to be the childhood form of harm avoidance."

shyness


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