Behavioral observations have the advantages of being direct, tangible, and informative as to the contextual determinants of behavior. Considerable evidence exists that a three-dimensional structure gives meaning to many child behaviors in a variety of life settings. Three bipolar dimensions constitute this framework: introversion vs. extroversion,…

Partial and methodologically questionable replications of the Luria experiments on the child's verbal regulation of his motor behavior have led to results and conclusions contradictory to Luria's findings. An error in the methodology of two of these replications is discussed as the reason for a new investigation of Luria's hypothesis. Several…