 The first is the work of Feffer and Feffer and Gourevitch  , which related role taking ability to Piaget's theory of social decentering  and developed a projective test to assess children's ability to decenter as they mature.
<fluency>  The first is the work of Feffer and Feffer and Gourevitch  , which related role taking ability to Piaget's theory of social decentering  and developed a projective test to assess children's ability to decenter as they mature.
 The first is the work of Feffer and Feffer and Gourevitch , which related role taking ability to Piaget's theory of social decentering , and developed a projective test to assess children's ability to decenter as they mature.