Individuals differ considerably in their social comparison orientation (SCO), that is, the extent to which and the frequency with which they compare themselves with others. In this chapter, the major findings with the scale assessing SCO are discussed. After presenting the basic psychometric properties of the scale and the relationships with various personality variables, the authors discuss how SCO is related to, among others, seeking upward and downward social comparison information, to establishing one’s risk, and to assessing one’s future prospects. Next, we present particularly the role of SCO in moderating the effects of upward and downward social comparison information with respect to a variety of contexts and dimensions, including close relationships, ageing, work and organizations, depression, health, and physical attractiveness. Special attention is paid to the question if SCO fosters identification and assimilation rather than contrast.
