Down syndrome can often be traced to ________
a. a defect in the shape of the uterus
b. a defect in the mother's egg cell
c. exposure to lead
d. maternal depression
B
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A man has trouble hearing and is being tested for a hearing aid. He is presented with tones of various intensities and is asked to indicate whenever he detects a sound. The procedure is most similar to that used by researchers who are studying
a. difference thresholds. b. absolute thresholds. c. the just noticeable difference. d. response biases.
How does the jigsaw classroom operate?
a. Students compete to win a top award. b. Students are each given a piece of information that must be shared to solve a problem. c. Students are told that one student holds the key to solving a problem and they must find out who it is. d. Students are all given separate puzzles to solve. e. Students are "locked" in a room together and must work together to figure out how to "escape."