Behavioral and Brain Sciences

Open Peer Commentary
Caplan & Waters: Working memory and sentence comprehension

Complexity effects are found in all relative-clause sentence forms

Glenda Andrews a1 and Graeme S. Halford a2
a1 School of Humanities and Social Sciences, Charles Sturt University, Wagga Wagga, NSW, Australia 2678
a2 School of Psychology, University of Queensland, Brisbane, Queensland Australia 4072


We argue that if a different definition of sentence complexity is adopted and processing capacity is assessed in a way that is consistent with that definition, then the Caplan & Waters distinction between interpretive versus postinterpretive processing is unnecessary insofar that it applies to the thematic role assignment in relative-clause sentences.