Moderate retardation corresponds to a Stanford-Binet IQ score within the range of ______

Piaget's term for the knowledge that an object exists even when it is out of sight is __________ q

a) conservation. b) object permanence. c) centration. d) egocentrism.

Telegraphic speech is speech that uses

A) single words to express an entire idea or sentence. B) only words that are essential to get the meaning across. C) narrow meanings of words. D) gestures, babbling, and protowords.