One has to be cautious about concluding that a "fighting spirit" helps one cope with stress and survive cancer because:

a. Physiological mechanisms are rarely assessed in these studies
b. Studies looking at these variables have found mostly negative results
c. The only research done in this area has been done with nonhumans
d. The studies involve cancers that are in the early stages

A

Psychology

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Which of the following statements about twin studies of behavioral genetics is true?

a) Monozygotic twins are genetically identical. b) Dizygotic twins are genetically identical. c) Fraternal twins are genetically identical. d) The epigenetic characteristics of identical twins are identical.

Psychology

Briefly describe the difference between the pleasure principle and the reality principle

What will be an ideal response?

Psychology