When the presence of others enhances one's performance of a well-learned task, we call this effect the _______ phenomenon

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."

Which of the following is true regarding alcohol's effects on women?

a. Women have more of an enzyme that breaks down alcohol in the stomach than men do. b. Alcohol may hit women harder because they weigh less than men. c. Most women find the taste of alcohol unpleasant and thus drink less. d. Women may be less likely to develop alcoholism because of the "flushing" response to drinking it.