Which is true regarding parent-adolescent relationships? a. the best way to describe the typical parent-child relationship from the teen years through middle age is a roller coaster of big highs and great lows. b. most adolescents respect their parents. c. interactions in childhood have no impact on an adolescent's relationship with his of her parents. d. the conflict level between teens and parents has grown dramatically during the past few decades?

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