When a child looks for an object in the place where it was last seen and gives up if it is not there, what type of logic are they demonstrating?
A) The A-not-B error
B) Representational logic
C) The error of object permanence
D) Trial-and-error logic
A
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An independent-groups t test a. compares sample means for two related groups
b. compares sample means for two unrelated groups. c. compares standard deviations for two unrelated group. d. compares sample means for three or more unrelated groups.
Synaptic pruning refers to the
a. production of neurons. b. positioning of neurons. c. disappearance of neurons. d. wrapping of neurons in a fatty sheath that allows them to transmit information more rapidly.
In comparison with child care in Sweden, child care in the United States is:
a. of much higher quality b. much cheaper c. less likely to be supported by government funding d. much more likely to be provided in the child's home
A developmental psychologist expects that teenagers who play violent video games will behave more violently than children who do not. He randomly assigns participants to play a violent game or a nonviolent game. Which of the following best describes the hypothesis in this study?
A. Predictive hypothesis B. Causal hypothesis C. Untestable hypothesis D. Research question