“…Other statistical techniques are surfacing and bear watching. In particular, latent variable techniques including finite mixture models (Hofmeyr et al, 2016;Oberski, 2016) permit the modeling of continuous or categorical unobserved variables (i.e., intervening variables, MacCorquodale & Meehl, 1948). Unlike cluster analysis which groups observed data patterns based on their similarity, these latent variable approaches consider latent cluster membership to be probabilistic and thus provide stronger theoretical modeling of multimodal data like those commonly observed in behavioral preparations involving response rates and interresponse times (Li, Hautus, & Elliffe, 2018;Ray & McGill, 1964;Young, Vangsness, & McCoy, 2018).…”