Equivalent groups typically are formed by _____
a. selecting two or more samples randomly from the population
b. ensuring that the proportions of males and females are the same in each group
c. matching participants for extraneous characteristics
d. randomly assigning participants to groups
D
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All babies vocalize with cries and coos in the first few months. Some psychologists believe that these vocalizations promote survival because they ensure infants maintain contact with caregivers. Based on this, evolutionary psychologists would likely classify infant cries and coos as:
a. universal and adaptive b. economical and adaptive c. universal and economical d. economical and random
What does the research indicate about the common phrase "Money can't buy you happiness?"
a. The phrase is false, at least in that having money means you don't have to worry about it. b. The phrase is false, money and happiness are unrelated. c. The phrase is true, having more money actually leads to lower levels of happiness. d. There is no research available on this topic.
REM sleep refers to __________________
a) dreamless sleep b) sleep induced by sleeping pills c) sleep periods in which sleepwalking is likely d) sleep periods in which a person's eyes move rapidly
A conduct disorder is characterized by anxiety about separating from parents and may be expressed as school phobia.
Answer the following statement true (T) or false (F)