With an emphasis on procedural fundamentals, the original behavior-analytic equivalence experiments and the equivalence paradigm are described briefly. A few of the subsequent developments and implications are noted, with special reference to the possible significance of the findings with respect to language and cognition. (Contains 9 figures.)

Twenty-four junior high school students with academic achievement in the 26-50 percentiles were given easier anagram tasks while their 183 classmates were given more difficult ones by means of a presentation trick using polarizing filters. The two series of anagram tasks were projected simultaneously on the same screen, but each of two groups of…

Purpose: To evaluate the learning effects of a deductive language-teaching procedure when teaching a novel gender agreement verb inflection to children with language impairment. Method: Thirty-two 6-8-year-old children with language impairment were randomly assigned to either a deductive (N = 16) or an inductive (N = 16) treatment group. In the…

Time-based prospective memory (PM) has been found to be negatively affected by aging, possibly as a result of declining frontal lobe (FL) function. Despite a clear retrospective component to PM tasks, the medial temporal lobes (MTL) are thought to play only a secondary role in successful task completion. The present study investigated the role of…

This study examined differences in performance between 20 shy and 20 matched nonshy children on a narrative task and in the way parents scaffolded their narrative performance when reading the wordless book "Frog, Where Are You", by Mercer Mayer. Consistent with previous research, results demonstrated that shy children spoke less than their nonshy…

This study investigated visuo-orthographic knowledge in deaf readers of French compared to age-matched hearing subjects. More specifically, we were interested in knowledge related to the legal position of double consonants and to the fact that double consonants are much more frequent than double vowels in written French. We used a word-likeness…

The purpose of this study was to investigate the use of Korean case particles in a Korean-English bilingual child with specific language impairment (SLI). The child's production of four types of Korean case particles were compared to those of three typically developing children during probe and storytelling tasks. The Korean-English bilingual…

The end-state comfort effect has been observed in recent studies of grip selection in adults. The present study investigated whether young children also exhibit sensitivity to end-state comfort. The task was to pick up an overturned cup from a table, turn the cup right side up, and pour water into it. Two age groups (N = 20 per group) were…

English and Italian children with dyslexia were compared with children with reading difficulties associated with low-IQ on tests of simple and choice RT, and in number and symbol scanning tasks. On all four speed-of-processing tasks, children with low-IQ responded more slowly than children with dyslexia and age-controls. In the choice RT task, the…

Pragmatic differentiation in bilinguals is the ability to use two languages appropriately with different speakers. Although some sensitivity emerges by 2 years, the effects of context on these skills and their relation to other developing metacognitive capacities have not been examined. The current study compared the language use of 28 bilingual…

A diminished top-down influence has been proposed in autism, to account for enhanced performance in low-level perceptual tasks. Applied to perceptual categorization, this hypothesis predicts a diminished influence of category on discrimination. In order to test this hypothesis, we compared categorical perception in 16 individuals with and 16…

Learning about letters is an important foundation for literacy development. Should children be taught to label letters by conventional names, such as /bi/ for "b", or by sounds, such as /b[inverted e]/? We queried parents and teachers, finding that those in the United States stress letter names with young children, whereas those in…

The study assessed the ability of English phonemic awareness measures to predict kindergarten reading performance and determine factors that contributed to growth trajectories on those measures for English Only (EO) and English language learner (ELL) students. Using initial sound fluency (ISF), phoneme segmentation fluency (PSF), and a combined…

This study compared the effects of static photographs and video prompts on the independent performance of cooking related tasks by six young adults with moderate intellectual disabilities. An adapted alternating treatment design with baseline and final treatment phase was used to measure the percentage of tasks correctly completed by each student…

The prevalence of phonological and surface dyslexia subtypes among Swedish university students with dyslexia (n = 40) was examined using both the regression method, developed by Castles and Coltheart, and latent profile analysis. When an academic-level control group was used as a reference group in a regression, eight students with phonological…