“…In this study, we included a fifth class: the contrastive relationship (or additive-negative , per Knott & Sanders, 1998; Sanders et al, 1992). Existing research suggests that not all connectives are equally easy to process; with few exceptions (notably, Cain et al, 2005; McClure & Steffensen, 1985), there is substantial convergent evidence that the order of class from easiest to most difficult is as follows: additive, contrastive, temporal, causal, and adversative (Badzinski, 1988; Bebout, Segalowitz, & White, 1980; Bloom, Lahey, Hood, Lifter, & Fliess, 1980; Cain et al, 2005; Geva, 2006a; Goldman & Murray, 1992; Graesser & Haberlandt, 1993; Nippold et al, 1992; Ozono & Ito, 2003; Pretorious, 2006; Shapiro & Hudson, 1991). An explanation of each class is presented in Table 1.…”