In class Dr. Heyman gave an example in which she had a pen and an eraser on the table. She described a young child who already knows the word "pen" but not the word "eraser". The child is then asked to pick up the eraser. The point of this example was to illustrate which of the following principles:

a. mutual exclusivity
b. whole object
c. the specific part principle
d. using the grammatical category of a word to infer its meaning

Ans: a. mutual exclusivity

Psychology

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The Seattle Longitudinal Study, begun in 1956, found that primary mental abilities tend to improve until the late thirties or early forties, and begin to decline thereafter

a. True b. False Indicate whether the statement is true or false

Psychology