Author Question: A difficulty in studying residential treatment programs for drug abuse is that a) most residences ... (Read 21 times)

jilianpiloj · **on:** Jun 22, 2018

A difficulty in studying residential treatment programs for drug abuse is that

a) most residences are secretive and unwilling to allow research activity.
b) addicts at such settings are not severely addicted.
c) patients at these settings are voluntary, and therefore these addicts represent a minority of the actual addict population.
d) the number of patients entering such settings changes slowly, making it difficult to obtain an adequate number of participants.

Question 2

Approximately how much of the sleep of an adult is spent in stage 2 sleep?

a) 10
b) 25
c) 50
d) 75