Good interactions are hard to find

Caplan & Water's arguments for separate working memory subsystems for "inte rpretative" and "post-interpretative"comprehension processes do not have a solid empirical basis. The likely involvement of a separate phonological lo op makes their memory-load data irrelevant to theory evaluation, and the la ck of statistical power from nonoptimal experimental designs and analyses u nfairly reduces the chances of detecting the relevant interactions.