To become a native speaker, beyond obligatory rules, children need to learn systematic variation in the language, as it is present at all levels of language structure and is an integral part of linguistic knowledge. To give an example in English, speakers sometimes pronounce words ending in -ing with -in' (e.g., working vs. workin') depending on…

Previous studies show that infants store functional morphemes for inferring syntactic categories of adjacent words, and they generally perform better with nouns than with verbs. In this study, we tested whether toddlers can exploit phrasal groupings for syntactic categorization in the face of noisy co-occurrence patterns. Using a visual fixation…

It has been shown that morphological skills are particularly enhanced in bilingual children, whereas they are compromised in dyslexics. The aim of this work is that of investigating how bilingualism interacts with dyslexia in a task measuring the subject's morphological abilities, to verify if the advantage typically found in bilingualism arises…

Languages exhibit variation at all linguistic levels, from phonology, to the lexicon, to syntax. Importantly, that variation tends to be (at least partially) conditioned on some aspect of the social or linguistic context. When variation is unconditioned, language learners regularize it -- removing some or all variants, or conditioning variant use…

Inflectional affixes expressing the same grammatical category (e.g., subject agreement) tend to appear in the same morphological position in the word. We hypothesize that this cross-linguistic tendency toward "category clustering" is at least partly the result of a learning bias, which facilitates the transmission of morphology from one…

Complex systems of inflectional morphology provide a useful testing ground for input-based language acquisition theories. Two analyses were performed on a high-density (12%) naturalistic sample of two Polish-English children's (2;0 and 3;11) and their parents' use of Polish noun inflection: first, each child's use of inflectional affixes and their…

Background: Turkish has a rich system of noun suffixes, and although its complex suffixation system may seem daunting, it can actually present a learning opportunity for children. Despite its unique features, Turkish has not been studied extensively, especially in the case of children with language deficits, such as developmental language disorder…

On the evidence of four lexical-decision tasks in German, we examine speakers' sensitivity to internal morphological composition and abstract morphological rules during the processing of derived words, real and novel. In a lexical-decision task with delayed priming, speakers were presented with two-step derived nouns such as "Heilung…

Despite substantial scholarship relating to word structure (Anderson, 2018), for English affixes the relationship between productivity, genre, and second language (L2) learning remains unclear. Analysis of the existing literature reveals that deadjectival noun suffixes (i.e., nouns derived from adjectives such as "appropriacy" or…

Purpose: This follow-up study examined whether a parent intervention that increased the diversity of lexical noun phrase subjects in parent input and accelerated children's sentence diversity (Hadley et al., 2017) had indirect benefits on tense/agreement (T/A) morphemes in parent input and children's spontaneous speech. Method: Differences in…

This study explored whether form-focused instruction (FFI) and peer corrective feedback (CF) facilitated vocabulary development during peer interaction (PI). Third-semester learners of German were assigned to a PI group (peer interaction only), PI FFI group (peer interaction and form-focused instruction), or PI FFI CF group (peer interaction,…

Background: According to some studies, sentence comprehension is diminished in Alzheimer's disease (AD) patients, but they differ on what underlies the sentence comprehension impairment. Sentence comprehension in AD patients has been studied mainly in the English language. It is less clear how patients with AD speaking a morphologically rich…

The study explored the inflectional morphological awareness of Greek-speaking children with dyslexia in grade 3. The sample consisted of 24 dyslexic children and 32 chronological age-matched typically developing readers. All participants completed two oral experimental tasks of inflectional morphological awareness (i.e., verb inflections and…

The study investigated the impact of language impairment and environmental deprivation on Hebrew morpho-lexical development across the school years. Participants were 659 grade school and middle school Hebrew-speaking students--typically developing and language impaired, from mid-high and from low socio-economic status (SES). They were all…

In our globalised world, the desire for the acquisition of English has led to increased research into the appropriate pedagogical approaches for learning and teaching the language. This manuscript focuses on the use of learners' mother tongue in the learning and teaching of English in an effort to identify ways in which cross-linguistic…