Teasing apart Syntactic Category vs. Argument Structure Information in Deverbal Word Formation: a comparative psycholinguistic study.

Deverbal word formation is subject to two distinct types of constraints, those concerning the syntactic category of the base (categorial constraints) and those relating to the thematic properties of the verb (thematic constraints). For instance, -able suffixation involves a transitive verb with argument structure >, as in to train > trainable. Violation of these constraints results in the creation of pseudo-words with categorial (e.g. riverable) or thematic violations (e.g. arrivable). The study discusses psycholinguistic experiments involving these types of deverbal pseudo-words, in Greek and English, two languages with morphologically distinct properties. Greek has a rich derivational system with a variety of deverbal formations, which follow strong constraints, in the sense that most suffixes that participate in deverbal word formation lack the polysemy that allows them to attach to other-than-verbal bases. English, on the other hand, demonstrates an equally rich derivational system, but it differs in two crucial ways: (a) there is significant affix homophony (e.g. -er is a nominalizer if attached to verbal stems, or forms the comparative if attached to adjectives), (b) it is extremely permissive in allowing zero-derived verbs (to fax). In an off-line and two on-line lexical decision tasks we investigated whether categorial and thematic constraints are treated in the same way by speakers of both languages. Results showed that speakers of both languages differentiated between pseudo-words that violate these two types of constraints both when it comes to acceptance rates and processing time. Taking together results from both languages, we make claims about the structured mental representation of deverbal derivatives and the fact that their various properties can be accessed via distinct operations and at distinct points of time. Implications for the psycholinguistic theory of lexical access and the morphological theory of word formation are also discussed

Past tense in children with focal brain lesions

In this study, 22 children with early left hemisphere (LHD) or right hemisphere (RHD) focal brain lesions (FL, n ¼ 14 LHD, n ¼ 8 RHD) were administered an English past tense elicitation test (M ¼ 6:5 years). Proportion correct and frequency of overregularization and zero-marking errors were compared to age-matched samples of children with specific language impairment (SLI, n ¼ 27) and with typical language development (TD, n ¼ 27). Similar rates of correct production and error patterns were observed for the children with TD and FL; whereas, children with SLI produced more zero-marking errors than either their FL or TD peers. Performance was predicted by vocabulary level (PPVT-R) for children in all groups, and errors did not differ as a function of lesion side (LHD vs. RHD). Findings are discussed in terms of the nature of brain–language relations and how those relationships develop over the course of language learning

Mild Cognitive Impairment: On-line and Off-line Processing of Slovenian Pseudo-words

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test

Implicit causality bias in English: a corpus of 300 verbs

This study provides implicit verb causality norms for a corpus of 305 English verbs. A web-based sentence completion study was conducted, with 96 respondents completing fragments such as “John liked Mary because...” The resulting bias scores are provided as supplementary material in the Psychonomic Society Archive, where we also present lexical and semantic verb features, such as the frequency, semantic class and emotional valence. Our results replicate those of previous studies with much smaller numbers of verbs and respondents. Novel effects of gender and its interaction with verb valence illustrate the type of issues that can be investigated using stable norms for a large number of verbs. The corpus will facilitate future studies in a range of areas, including psycholinguistics and social psycholog