Brown, Ellen. <br/><br/>
A study in ecological psychology: the behaviour objects used by three-year-old children from three income groups. 

 - Nashville, Ten :  Darcee,  1969. 
<br/><br/> Examines how a child's environment can affect his intellectual development. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational psychology.<br/>Child development -- Learning.--Child development -- Learning.