An older fraternity member convinces jenn and her friends to try a new drug at a party. within a half hour they are feeling great, hugging each other, sweating, and feeling thirsty; soon they also begin to feel overheated. the drug they took is most likely:

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design