The adulthood psychological adjustment achieved by Bruce-Brenda-David, the male twin whose penis was ablated during a botched circumcision procedure at age 7 months, suggests that

a. nature's impulse is to create a female.
b. sexual identity may not be easily shifted by the upbringing of a child.
c. regular injections of testosterone can shift sexual identity.
d. genetic type is less important than are social factors.
e. normal circumcision can alter sexual identity.

Answer: b. sexual identity may not be easily shifted by the upbringing of a child.

Psychology

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Over the course of evolution, human infants have typically been exposed to some forms of stimulation that are used to adjust brain wiring, strengthening some circuits and eliminating others. This is known as

a. experience-expectant growth. b. brain-based education. c. experience-dependent growth. d. neurogenesis.

Psychology

The precedent for using college students research participants is due to their

a) availability b) intelligence. c) generalizability. d) age.

Psychology