An investigator plays the sound "ba" until an infant habituates. Then the investigator switches to the sound "pa.". What is the investigator probably trying to determine?
a. Which sound, if either, can an infant imitate?
b. Do infants remember sounds as well as they remember sights?
c. Do infants remember sounds as well as they remember sights?
d. Does the infant hear a difference between the sounds?
d
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Linley is trying to reduce racism by having children of different races work on projects together. Each student is given information critical to the project and has to collaborate with their different-race group members by sharing that information to earn a good grade on the project. The classroom norms are supportive of cross-race interaction. Which condition is essential to the success of the
contact hypothesis is missing? a. equal status b. social norms c. cooperative activities d. personal interaction
Professor Travila tells his class that the part of the brain most often associated with drug addiction is the ____.
A. nucleus accumbens B. limbic system C. thalamus D. hypothalamus
To qualify as "leisure," an activity must:
A. involve physical exertion. B. be discretionary. C. involve some monetary payment D. be creative.
The joining of sperm and ovum to create the single-celled zygote from which life begins is referred to as __________.
a. fertilization b. ectopic pregnancy c. gamete creation d. the fetal stage