According to Piaget, __________ are at the heart of _________, which is a major advance for preschool children.
A. symbolic functions; language use
B. concrete operations; language use
C. symbolic functions; postoperational thinking
D. symbolic functions; concrete operational reasoning
Answer: A
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We can say that a t test is not significant, if it fails to provide evidence against the ______.
A. alternative hypothesis B. frequency scores C. test assumptions D. null hypothesis
The purpose of an experiment is to demonstrate that changes in one variable are responsible for causing changes in a second variable
a. True b. False Indicate whether the statement is true or false
In the movie "Pretty Woman" Richard Gere transforms Julia Roberts from a low-class prostitute into a high-class lady. This move is an example of ______.
A. halo effect B. a central trait C. Pygmalion effect D. attributional ambiguity
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a. delta waves. b. sleep spindles. c. paradoxical sleep waves. d. beta waves. e. gamma waves.