Zimmerman, B J <br/><br/>
Modification of young children's grouping strategies: the effects of modeling, verbalization, incentives, and age.  [electronic resource] 

 -  Child development  Dec 1974 
 - 1032-41 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial 
<br/><br/><label>ISSN: </label>0009-3920 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Age Factors<br/>Attention<br/>Child, Preschool<br/>Concept Formation<br/>Discrimination Learning<br/>Female<br/>Humans<br/>Imitative Behavior<br/>Male<br/>Motivation<br/>Pattern Recognition, Visual<br/>Problem Solving<br/>Size Perception<br/>Verbal Behavior