In a longitudinal study, __________ effects occur when individuals born in the same time period are influenced by a particular set of historical and cultural conditions

Perceptual skills involved in putting puzzles together or recognizing musical melodies are special skills of the __________ hemisphere

Fill in the blank(s) with correct word

In Shatz and Gelman's study, when four year olds described a toy to a younger child, they

a. shortened their utterances. c. used fewer attention-getting devices. b. increased their word count. d. all of these.