English main-clause wh-questions form complementiser phrases with wh-words preposed to spec-C position. This is because English wh-words, as verb-complements originally, are strong enough to trigger wh-movement and auxiliary inversion. Persian EFL learners encounter an over-differentiation problem regarding the acquisition of auxiliary inversion rule in English standard questions. Once they hav...

Locative constructions, as an instance of double object constructions with various cognitive-linguistic concepts, have been successful in attracting the linguists. This paper tried to evaluate the acquisition of English locative constructions by Persian native speakers in the absence of negative evidence, focusing on the influence of L1 and participants’ proficiency level in the course of acqui...

Age of acquisition (AoA) effects have been used to support the notion of a critical period for first language acquisition. In this study, we examine AoA effects in deaf British Sign Language (BSL) users via a grammaticality judgment task. When English reading performance and nonverbal IQ are factored out, results show that accuracy of grammaticality judgement decreases as AoA increases, until a...

A traditional source of evidence in linguistics is intuition, the judgments of competent speakers of a language. Patterns in the intuitions motivate theoretical developments, and hypotheses are tested against those intuitions. In much of the literature on intuitions in linguistics, 'intuition' is used synonymously with 'grammaticality judgment,' which in turn is a (widely-recognized) misnomer f...

This study aimed to investigate what is really learned in artificial grammar (AG) learning and how selective attention influences AG learning. In the learning phase, depending on the aspects of GLOCAL strings—chains of compound letters that can allow two different AGs— participants were presented with two different series of letter strings. Their selective attention was manipulated by the exper...

This study investigated whether the negative effect of complexity on artificial grammar learning could be compensated by adding semantics. Participants were exposed to exemplars from a simple or a complex finite state grammar presented with or without a semantic reference field. As expected, performance on a grammaticality judgment test was higher for the simple grammar than for the complex gra...

We examined the abilities of aphasic patients to make grammaticality judgments on English sentences instantiating a variety of syntactic structures. Previous studies employing this metalinguistic task have suggested that aphasic patients typically perform better on grammaticality judgment tasks than they do on sentence comprehension tasks, a finding that has informed the current view that gramm...

Three neuropsychological experiments on a group of 16 cerebellar patients and 16 age- and education-matched controls investigated the effects of damage to the cerebellum on English grammatical morphology across production, comprehension, and grammaticality judgment tasks. In Experiment 1, participants described a series of pictures previously used in studies of cortical aphasic patients. The ce...