Why do the wrinkles and folds of the cortex represent a triumph of evolution?
A) Wrinkles and folds allow for faster communication between neurons.
B) Because the outward appearance of the brain does not confer a competitive advantage in reproduction, no energy was spent correcting for the wrinkles and folds.
C) Wrinkles and folds decrease the amount of cortex material needed to process the same amount of information.
D) Wrinkles and folds increase brain surface area while still allowing it to fit inside the skull.
B) Because the outward appearance of the brain does not confer a competitive advantage in reproduction, no energy was spent correcting for the wrinkles and folds.
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All of the following treatments show promise in treating posttraumatic stress disorder EXCEPT:
a. A technique involving virtual reality b. Fear erasure c. Psychotherapy d. Exposure therapy
Research on independence in adolescents suggests that
a. with greater independence adolescents become emotionally detached from their parents. b. adolescents who feel close to their parents show more independence and self-reliance. c. greater independence is related to poor academic performance. d. greater independence is related to more disagreements with parents.