Efforts to teach chimpanzees to talk probably failed because_________
a. the researchers did not use the proper reinforcement procedures
b. chimps have their own language which they would not give up
c. the researchers did not begin instruction when the chimps were very young
d. chimps lack the biological structures for speech
D
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Which invasive test can be used if blood tests and ultrasound have identified a potential problem with the developing child, or if there is a family history of inherited disorders?
A. amniocentesis B. chorionic villus sampling (CVS) C. ultrasound sonography D. first-trimester screen
Since self-handicapping allows people to easily engage in ____, it helps them to maintain and enhance positive self-concepts
a. the self-serving bias b. the fundamental attribution error c. the self-reference effect d. introspection
One probable reason for the widespread use of trait descriptions is that they
a. describe the person over time. b. are the briefest alternative. c. provide a lot of specific information. d. paint a more favorable picture.
Which waves are found in the greatest number of sleep stages?
A. sleep spindles B. theta waves C. delta waves D. beta waves