The theoretical relation between adolescent egocentrism and formal operations was addressed in two studies. In the first study this relation was assessed with the Adolescent Egocentrism Scale (AES) and a battery of formal reasoning tasks devised by Lunzer, administered to a sample of 6th-, 8th-, 1 Oth-, and 12th-grade subjects. The results revealed only significant negative or nonsignificant correlations between the measures in early adolescence. There was also no evidence of significant developmental covariation from early to middle adolescence. The validation effort was extended in Study 2 to include the two extant measures of adolescent egocentrism (AES and the Imaginary Audience Scale, or IAS) and a second battery of formal operations problems (Test of Logical Thinking). These measures were administered to a sample of 7th-, 9th-, and 1 lth-grade students and to a sample of college undergraduates. There was once again no evidence of significant developmental covariation among the measures. The correlations between the AES and IAS were modest, reflecting differences in the nature and content of the measures. Little support exists in this study or in the literature for the crucial theoretical assumption of adolescent egocentrism. Suggestions for future research are outlined. We express our appreciation to Lynn Miller of the South Bend Public School Corporation and to Johnetta Hudson, James Knight, and their faculty and students at LaSalle High School and Clay Middle School, respectively, for their assistance in the conduct of this study. We are also grateful for the helpful comments and advice provided by Robert Enright, Ron Serlin, and two anonymous reviewers.

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