“…The extensive use of Olson's model and the FACES instruments in research studies has produced an ongoing debate surrounding the curvilinear nature of Cohesion and Adaptability in the model (Anderson & Gavazzi, 1990; Beavers & Voeller, 1983; Ben‐David & Sprenkle, 1993; Day & Hooks, 1987; Eckblad, 1993; Fristad, 1989; Green, 1989; Green, Harris, Forte, & Robinson, 1991a, b; Green, Kolevzon, & Vosler, 1985a, b; Hampson, Beavers, & Hulgus, 1988; Kuehl, Schumm, Russell, & Jurich, 1988; Miller, Epstein, Bishop, & Keitner, 1985; Olson, 1989, 1991; Olson, McCubbin, Barnes, et al ., 1983, 1985; Olson, Portner, & Lavee, 1985; Perosa & Perosa, 1990; Pratt & Hansen, 1987; Thomas & Cierpka, 1989; Thomas & Olson, 1994). The term “curvilinear,” is used by Olson to describe the inverted “U” relationship between a variable and some standard.…”