Purpose: Our goal was to compare statistical learning abilities between preschoolers with developmental language disorder (DLD) and peers with typical development (TD) by assessing their learning of two artificial grammars. Method: Four- and 5-year-olds with and without DLD were compared on their statistical learning ability using two artificial…

The present paper examines a type of abstract domain-general knowledge required for the process of constructing useable domain-specific causal knowledge, the evident goal of causal learning. It tests the hypothesis that analytic knowledge of "causal-invariance decomposition functions" is essential for this process. Such knowledge…

This study explored whether a daytime nap aids children's acquisition of letter-sound knowledge, which is a fundamental component for learning to read. Thirty-two preschool children in Sydney, Australia (M[subscript age] = 4 years;3 months) were taught letter-sound mappings in two sessions: one followed by a nap and the other by a wakeful period.…

A nap soon after encoding leads to better learning in infancy. However, whether napping plays the same role in preschoolers' learning is unclear. In Experiment 1 (N = 39), 3-year-old habitual and nonhabitual nappers learned novel verbs before a nap or a period of wakefulness and received a generalization test examining word extension to novel…

Purpose: Recent findings in preschool children indicated novel adjective recall was enhanced when learned using repeated retrieval with contextual reinstatement (RRCR) compared to repeated study (RS). Recall was similar for learned pictures used during training and new (generalized) pictures with the same adjective features. The current study…

Children can acquire generic knowledge by sharing in pretend play with more knowledgeable partners. We report 3 experiments in which we investigated how this learning occurs-how children draw generalizations from pretense, and whether they resist doing so for pretense that is unrealistic. In all experiments, preschoolers watched pretend scenarios…

A well-known challenge for language learners is that the input is typically produced by a variety of speakers, each with distinct vocal characteristics (Liberman, Harris, Hoffman, & Griffith, 1957). Accordingly, many studies have indicated that talker variability leads to processing costs for learners across the lifespan (Jusczyk & Pisoni,…

Assesses the relative effects of manipulation of antecedent stimulus conditions and subsequent reinforcement contingencies on imitative and nonimitative behavior. Fading (a form of antecedent conditions manipulation) was highly effective in establishing stimulus control of imitative and non imitative responding. Reinforcement of non imitative…

Three studies investigated 3-year-olds' comprehension of indirectly and directly learned words after a 2-day delay. Found indirectly and directly learned proper and common names resulted in proper name mappings that picked out individual and common name mappings that could be extended to another category member. When additional, sometimes…

This study assessed the value of teaching young children the relevant attributes of a concept and the conceptual rule by which the attributes are organized. It was hypothesized that only if children had prior knowledge of both components could they follow instructions designed to teach a new concept. It was further hypothesized that children who…

The purpose of this study was to investigate children's acquisition of the non-comparative forms of spatial adjectives and to specifically test the following experimental questions: (1) Are positive-pole terms, or those such as "big," which indicate extent along a dimension, acquired earlier than negative-pole terms? (2) Does…

The generalization of "trained" creativity in easel painting to untrained creativity in blockbuilding was examined in two preschool boys. Verbal reinforcement of every different form painted in a picture increased both the number of different forms per picture and new forms (those appearing for the first time in the total output of…

This study investigated the spontaneous use of verbal mediators in discrimination learning, the transfer of mediators to a free recall task, and the effects of a pretraining task on performance. The discrimination tasks required nursery school children (80) to: (1) sort three instances each of two different concepts in a conceptually consistent…

Three stages of the developing second language of a 3;9-3;11 year-old English-speaking child in an Urdu speech milieu were examined and compared with findings that have been accumulated about the order and process of first language acquisition. The study showed that in the development of many syntactic and morphological features the child used…

Piaget's notions about schema retention were examined using a sample of 384 disadvantaged four, five, and six year old children from a wide geographical area. The purpose was to examine the idea that schemas may be destroyed or modified by specific methods of interference using a retroactive inhibition model. Pictorial scenes were generated and…