When 6-month-old Gabby says "tatatata," she is
A. cooing.
B. using telegraphic speech.
C. babbling.
D. engaging in private speech.
Answer: C
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In their cross-cultural study of infant development, Callaghan et al. (2011) found that infants in three different cultures displayed about the same amount of __________.
A. active protest B. communicative pointing C. pretend play D. understanding of pictures
Based on research with nonhuman primates, many researchers believed that there really was not much that is unique about humans' language skills. One challenge to this line of thinking is that ____
a. ?nonhuman primates were able to combine gestures into more and more complex and elaborate messages b. children use languages spontaneously and creatively, while nonhuman primates lack this tendency? c. ?nonhuman primates never learned to combine words in systematic order d. ?nonhuman primates could generate complex messages once they had learned the basic symbols
Interpersonal conflict
a. exists whenever two or more people disagree. b. exists only between competitors and enemies. c. is almost always a simple understanding. d. cannot be managed once it begins.
A researcher hypothesized that the drug amphetamine (a stimulant) improves learning. She explains her hypothesis to her participants and gives experimental group participants an amphetamine pill before they begin studying. Control group members get nothing. Later, she assesses how much each participant learned. Because of the hypothesis explanation and because the experimental group was given a
pill that the other group did not receive, the experimental group will most likely expect to learn more. Thus, any observed differences between groups may reflect differences in expectation, not the actual effect of the drug, a problem known as the a. anthropomorphic error. b. research participant bias. c. courtesy bias. d. double-blind experimental effect.