Sentence:  <WSD>Piaget</WSD><small>2</small> has conducted many careful studies on the evolu-/  tion of games during childhood, and has suggested that moral/  behavior consists in a system of rules, and the essence of all/  morality is to be sought for in the respect which the individual/  acquires for these rules."<small>3</small> <WSD>Piaget</WSD> thus equates morality, or/  ethical feeling and conduct, with the individual's attitude/  toward and practice of various rules. This perspective provides/  a rational basis for the analysis of moral schemes as games,/  and of moral behavior as the players' actual conduct. 
Meaning of the word marked with <WSD> tags:  (Jean Piaget) (1896–1980), Swiss developmental psychologist and philosopher.