“…The second approach focuses on developing theoretically-motivated methods for deriving qualitatively distinct predictions from large classes of information processing models. One meta-theoretic approach, Systems Factorial Technology (SFT, Townsend & Nozawa, 1995;Townsend, Wenger, & Houpt, 2018), has systematically built upon and generalized many of the key historical theories including, among others, the method of subtraction (Donders, 1868), additive factors methods (Sternberg, 1966(Sternberg, , 1969Schweickert, 1978;Townsend, 1971Townsend, , 1984, redundant target methods (Raab, 1962;Miller, 1982), and trichonometric theory . SFT has been reviewed in several recent tutorials (Algom & Fitousi, 2016;Altieri, Fifić, Little, & Yang, 2017;Houpt, Blaha, McIntire, Havig, & Townsend, 2013;Harding et al, 2016) and in the recent volume by Little, Altieri, Fifić, and Yang (2017) and a recent special issue of the Journal of Mathematical Psychology.…”