Social categorization theory ( Turner , 1978 ) .
Is consistent with research asserting that people tend to compare their personal and vicarious actions and achievements to others ( Mowen , 2004 ; Zillmann et al. , 1989 ) .
social categorization theory ( Turner , 1978 ) , and is consistent with research asserting that people tend to compare their personal and vicarious actions and achievements to others ( Mowen , 2004 ; Zillmann et al. , 1989 ) .