Sven has just realized that before his daddy goes to work in the morning, he first eats breakfast in the kitchen. as a result of this realization, he now goes to the kitchen as soon as he hears his dad get up so that he can be near dad. this behavior best exemplifies

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