Nancy is an 8-year-old girl who loves to play soccer. when her teams wins, he parents take her out for celebratory ice cream, but when nancy's team loses, her parents send her to bed without supper. the behavior of nancy's parents is an example of:

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