Which of the following is true of heroin addiction?

a. heroin addicts generally have normal life spans
b. heroin addicts are generally uninterested in sex
c. heroin addiction rates declined throughout the 1990s
d. all of these are true

b

Psychology

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Which schedule of reinforcement is the most effective for initially developing and strengthening a behavior?

a) Continuous b) Fixed ratio c) Variable ratio d) Variable interval

Psychology

When relations are difficult or strained, or the individual is not feeling supported or accepted, the sociometer indicates a(n) _______

a. high self-esteem b. low self-esteem c. accurate self-concept d. inaccurate self-concept

Psychology