“…Both Piaget and Elkind have proposed that egocentrism in adolescence is associated with the emergence of formal thinking. Up to now, this hypothesis has not received strong support (e.g., Hudson & Gray, 1986;Lapsley, Milstead, Quintana, Flannery, & Buss, 1986;Lechner & Rosenthal, 1984;O'Connor & Nikolic, 1990;Riley, Adams, & Nielsen, 1984), although construct validation problems encountered when dealing with developmental data cannot be overlooked (Petersen, 1985;Waters & Tinsley, 1985). Nevertheless, there is growing evidence that egocentrism (and its components) may be influenced by social environmental factors (e.g., Mullis & Markstrom, 1986;Riley et al, 1984).…”