This week andrea is babysitting her younger sisters, cassy, who is the youngest, and nikki. andrea fixes them both a glass of their favorite juice except that cassy's glass is taller and nikki's is wider and shorter. andrea anticipated that nikki would complain, but she did not. when andrea asked nikki why, nikki replied that the glasses held the same amount. nikki is in which stage of cognitive development according to piaget's theory

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

Much of the ill will between armenians and the azeri people of azerbaijan arises because

In the context of c. h. cooley's theory of groups, identify each attribute as either belonging to a primary group or a secondary group.