“…The complementarity hypothesis, that people tend to behave in ways to elicit complementary behaviors and that complementary relationships tend to be the most positive and effective, has found support in the relatively few studies that have examined it By studying therapist-chent relationships (Berzins, 1977, Heller, Myers, & Klme, 1963, Mueller, 1969, Mueller & Dilhng, 1968) and peer interactions (Shannon & Guerney, 1973), researchers have found that adults do elicit complementary behaviors more fi-equently than other behaviors There is also some evidence suggestmg that adults tend to elicit complementary behaviors from children (Raush, Dittman, & Taylor, 1959, Raush, Farbman, & Llewellyn, 1960 However, only one author has reported that complementarity was related to a more positive interaction Ekstrand (1980) found that complementary pairs of adults worked together more effectively on a cooperative task than did anticomplementary pairs…”