摘要：There is much evidence in the literature about argument structured influence on verb production in agrammatic patients. Specifically, unergative verbs are produced more easily than both two-place and three-place transitive verbs in a picture-naming task (Luzzatti et al., 2002; Thompson, 2003). Unaccusative verbs are rarely produced since they are considered to be syntactically complex, in that their grammatical subjects originate in the post-verbal complement position and then move in the subject position. A theoretical account of these results is the Argument Structure Complexity Hypothesis (ASCH; Thompson，2003)，which states that verbs with complex argument structure - both in terms of number of arguments and/or of movement - are impaired in agrammatic production. The aim of the present study is to investigate whether the efect of argument structure complexity, as predicted by the ASCH, is also elicited by a word-naming task.
