The efficiency of infants' actions was observed as they picked up and used food-laden spoons that varied in orientation. Two interventions were designed to facilitate efficient action beyond when infants were presented with one spoon in alternating orientations: one spoon was presented in the same orientation for several consecutive trials to help…

Toddlers' symbolic understanding of iconic models was assessed through 2 comprehension-based tasks: 1 based on looking and 1 requiring manual selection of the target object. Toddlers received either iconic models or photographs of models as the symbolic referent. Overall, 18-month-olds performed poorly, and both 22- and 26-month-olds performed…

Two studies examined whether young children use their knowledge of the spelling of base words to spell inflected and derived forms. In Study 1, 5- to 9-year-olds wrote the correct letter (s or z) more often to represent the medial /z/ sound of words derived from base forms (e.g., "noisy," from "noise") than to represent the medial /z/ sound of…

The nature of the initial state in second-language (L2) acquisition is a much debated but still unresolved issue, due in part to the empirical problem of obtaining production data from L2 learners at very early stages in development. In an attempt to circumvent this problem, this article presents evidence from a comprehension-based experiment…

Purpose: This purpose of this study was to investigate the lexical and semantic fast mapping ability of young children with specific language impairment (SLI) and normal language (NL), with a specific emphasis on the influence of phonological factors. Method: The study included 46 children (mean age 58 months), half with SLI and half with NL.…

The theme of the 38th meeting of the International Group for the Psychology of Mathematics Education (PME 38) and the 36th meeting of the North American Chapter of the Psychology of Mathematics Education (PME-NA 36) was "Mathematics Education at the Edge." Academically, the theme provides opportunities to highlight and examine…

Applied behavior analysis (ABA) has emerged as one of the most effective empirically based strategies for instructing individuals with autism spectrum disorders (ASD). Four ABA-based strategies that have been found effective are video modeling, visual strategies, social script fading, and task analysis. Individuals with ASD often struggle with…

The test scores of spatial ability for women lag behind those of men in many spatial tests. On the Mental Rotations Test (MRT), a significant gender gap has existed for over 20 years and continues to exist. High spatial ability has been linked to efficiencies in typical computing tasks including Web and database searching, text editing, and…

This longitudinal study examined individual differences and correlates of focused attention when toddlers were approximately 18 months old (T1; n = 256) and a year later (T2; n = 230). Toddlers' attention and negative emotionality were reported by mothers and non-parental caregivers and rated globally by observers. Toddlers' focused attention also…

Several researchers have found that the type of task and learners' level of L2 proficiency are major determinants of the type and amount of metatalk. This paper is the first attempt to investigate potential interactions among the type of metatalk, the type of task and learners' level of L2 proficiency. Intermediate and advanced Japanese learners…

Although working memory capacity is an important contributor to reading comprehension performance, it is not the only contributor. Studies have shown that epistemic knowledge (or knowledge about knowledge and learning) is related to comprehension success and may enable low-span readers to compensate for their limited resources. By comparing the…

The linguistic and cognitive profiles of five deaf adults with a sign language disorder were compared with those of matched deaf controls. The test involved a battery of sign language tests, a signed narrative discourse task and a neuropsychological test protocol administered in sign language. Spatial syntax and facial processing were examined in…

The teaching of an invented language rule has been proposed as a possible non-biased, language-independent assessment technique useful in differentiating young L2 learners with specific language impairment from their typically developing peers. The current study explores these notions by testing typically developing sequential bilingual children's…

The aim of the present study was to investigate the grain size predominantly used by children learning to read and spell in Indonesian. Indonesian is an orthographically transparent language, and the syllable is a salient unit. Tasks assessing various levels of phonological awareness as well as letter knowledge, reading familiar words and…

This study investigates L2 learners' use of French derivational processes and their strategies as they form agent nouns. It also attempts to find out which of the acquisitional principles (conventionality, semantic transparency, formal simplicity, and productivity) advanced by Clark (1993, 2003) for various L1s acquisition of word formation…