“…While it might appear likely that the lower class child begins to grasp meanings in advance of any opportunity he has for verbalizing them, even here a lack of differ-REVIEW OF EDUCATIONAL RESEARCH entiation among mental abilities based on lower verbal meaning and lower fluency scores was found to be characteristic of low status children compared with high status children studied by Mitchell (1956). Pavenstedt (1965) described children from low class families as frequently not attending to instructions and needing to rely on concrete demonstrations to translate instructions into action, a conclusion which could, however, reflect short attention span rather than comprehension difficulties. The language models to which impoverished children are exposed are often not only meager, restricted, and incorrect grammatically but also punitive, according to Gray and Klaus (1963) and Bernstein (1961), limiting divergence and elaboration in children's thinking, and thereby inhibiting the development of their ability to comprehend.…”