Sara Smilansky studied the effect of Israeli sociocultural background on the extent of this activity’s “sociodramatic” type. Greenspan’s floortime approach uses an autonomously led version of this activity to assess for developmental delay. One stage of Parten’s theory of this activity describes doing it in the presence of others without interacting with them as its “parallel” type. (15[2])An experiment run by Kenneth and (*) Mamie Clark asked subjects which of two objects was “a nice color” and was their preference to do this activity with and was later cited in Brown v. Board. It’s not learning, but a “collaborative” and “self-directed” form of this activity is encouraged by the Montessori school. For 10 points, (-5[1])identify this activity that names a form of therapy which may include a sand tray, building blocks, or dolls. (10[1])■END■