Studies investigating the development of tense/aspect in children with developmental disorders have focused on production frequency and/or relied on short spontaneous speech samples. How children with developmental disorders use future forms/constructions is also unknown. The current study expands this literature by examining frequency,…

Background: Research on the relationships between parental factors and children's executive function (EF) has been conducted mainly in Western cultures. Aim: This study provides the first empirical test, in a non-Western context, of how maternal EF and parenting behaviours relate to child EF. Sample South Korean mothers and their preschool…

The MacArthur-Bates Communicative Development Inventories (CDIs) are a widely used family of parent-report instruments for easy and inexpensive data-gathering about early language acquisition. CDI data have been used to explore a variety of theoretically important topics, but, with few exceptions, researchers have had to rely on data collected in…

To better understand how toddlers integrate multiple learning strategies to acquire verbs, we compared sensorimotor recruitment and comparison learning because both strategies are thought to boost children's access to scene-level information. For sensorimotor recruitment, we tested having toddlers use dolls as agents and compared this strategy…

An evaluation measure (EM) guides a learner's choice of grammar when more than one is compatible with available input. EM must be universal, so children receiving comparable input acquire comparable grammars. It must favor the choices children actually make. The theoretical shift from rule-based grammars to principles-and-parameter-based grammars…

This study tested the impact of child-directed language input on language development in Spanish-English bilingual infants (N = 25, 11- and 14-month-olds from the Seattle metropolitan area), across languages and independently for each language, controlling for socioeconomic status. Language input was characterized by social interaction variables,…

It has long been recognized that there is a natural dependence between theories of knowledge representation and theories of knowledge acquisition, with the idea that the right knowledge representation enables acquisition to happen as reliably as it does. Given this, a reasonable criterion for a theory of knowledge representation is that it be…

Inspired by Syrett (2013), three experiments explored children's ability to distinguish "attributives" (e.g., "three-pound strawberries," where MPs as adjectives signal reference to attributes) versus "pseudopartitives" (e.g., "three pounds of strawberries," where MPs combine with "of" to signal…

Purpose: This study investigates the production of voiceless alveolar and postalveolar fricatives and affricates by bilingual and monolingual children with hearing loss who use cochlear implants (CIs) and their peers with normal hearing (NH). Method: Fifty-four children participated in our study, including 12 Spanish-English bilingual CI users (M…

Our study highlights how careful attention to, reflection on, and critical engagement with the dialogues of 2-year-olds in preschool 'mixed-age' settings can help teachers work more effectively with these learners. The teachers in our study carried out in-depth coding of, and reflection on, comprehensive video footage of dialogues involving…

Purpose: Most educational assessments tend to be constructed in a close-ended format, which is easier to score consistently and more affordable. However, recent work has leveraged computation text methods from the information sciences to make open-ended measurement more effective and reliable for older students. This study asks whether such text…

Children with speech and language delays are at a high risk for future reading difficulties (Al Otaiba & Smartt, 2003). Hence, it is vital to identify effective language interventions for children with language delays that can be embedded in their daily routines. This study examined the effects on parental use of language strategies (i.e.,…

The Maternal Interactive Beliefs Questionnaire (Johnston and Wong, 2002) assesses maternal beliefs about children's language development. This study investigated the psychometric properties of a Persian translation of this questionnaire. The translation followed the protocol of the World Health Organization. Psychometric properties were evaluated…

This study investigates the coordination of matrix and subordinate clauses within finite complement-clause constructions. The data come from diary and audio recordings which include the utterances produced by an American English-speaking child, L, between the ages 1;08 and 3;05. We extracted all the finite complement-clause constructions that L…

Past research suggests that bilingualism positively affects children's performance in false belief tasks. However, researchers have yet to fully explore factors that are related to better performance in these tasks within bilingual groups. The current study includes an assessment of proficiency in both languages (which was lacking in past work)…