a Piagetian task to demonstrate egocentricity,whereby children are shown a model of three mountains, and watches as a doll is positioned at adifferent point around the mountains. Pre-operational egocentric childrenare unable to see from the dolls perspective of the mountains.
was one ofthe original founders of the humanistic perspective. His theories encompassedthe importance of unconditional and conditional positive regard in development of the 'selfconcept' and 'conditions of worth' set by others. His work has been applied to a rangeof domains, particularly in therapy through his development of'client-centred'(now class="d-title" named 'person-centred'therapy.