A psychologist administered an IQ test to Joshua, age 12, and found his IQ was 30. Joshua also exhibits poor motor development and poor communication skills. What is the most likely diagnosis?
a) savant syndrome
b) Korsakoff's syndrome
c) severe mental retardation
d) moderate mental retardation
C
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In a study of 4-month-olds played infant-directed speech in various languages, researchers found that infants:
a. only liked the recordings of their own language. b. only liked the recordings of languages not their own. c. liked all of the recordings, both in their native language and not. d. do not like infant-directed speech.
Susan learned at a young age that developing good study habits, such as doing her homework, brought about good grades, and this made her want to work harder in school. This type of behavior is being strengthened through __________
a) learning theory b) classical conditioning c) reinforcement d) social-cognitive