Piaget has described a phase of development in middle childhood which he termed "egocentric." At this time (age 6 to 8) the child takes his own point of view as absolute and is unable to assume the point of view of others. In his investigations Piaget employed a series of questions to determine whether the child had a relativistic, as opposed to egocentric, view of the concepts "brother" and "left-right" (6, p. 98). These questions have been used by subsequent investigators (4, 7) to derive a relativism scale which was used as a measure of egocentric thinking. Although Piaget assumes that egocentricity is a relatively general stage through which all children pass and which only gradually yields to a more socialized position, he has not concerned himself with the testing of this generality either between various cognitive functions or within particular individuals. Some evidence of this generality already exists. Numerous studies of conceptual development show that the 7to 8-year range is an important one. For example, concrete groupings on the Goldstein ObjectSorting Test are giving way to functional sortings, and abstractions are beginning to appear (8). On the Weigl Color-Form Sorting Test, this is the period when 50 per cent or more of the children can abstract and sort by both form and color (8). At about this time also, Rorschach responses rise to a plateau of differentiation and integration which lasts until the child is 1o (3). But in all these studies the degree to which egocentricity was characteristic of a particular child on a variety of conceptual tasks was not explored. One purpose of the present study was to determine whether children's performance on the relativism scale (RS) was positively correlated with the egocentricity of their performance on other measures of conceptual function.