Which of the following is not a genetically based disorder linked to mental retardation?
a. Down syndrome
b. Prader-Willi syndrome
c. Fetal alcohol syndrome
d. Phenylketonuria
e. Fragile X syndrome
C
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Eighteen overweight volunteers weighed themselves before and after a two-week diet. The appropriate design for testing the significance of the difference between the means is
a. related-samples t-test. b. independent-samples t-test. c. one-sample t-test. d. z-test.
Shy individuals tend to
a. rate high in public self-consciousness. b. blame circumstances for social failures. c. give themselves credit for social successes. d. do all of these.
Kendrie's preschool class changes the calendar at the beginning of class every day and looks at words that tell the month and day. This activity contributes to Kendrie's
A) cardinality. B) emergent literacy. C) fuzzy-trace theory. D) autobiographical memory.
According to Piaget, children from the ages of 2 to 7 are in the ____ stage of cognitive development
a. sensorimotor b. preoperational c. concrete operations d. formal operations