According to the principle of relative-strength competition, stronger items in memory block the retrieval of weaker items. This principle, integral to many theories of forgetting over the years, derives much of its support from the list-strength effect (LSE), in which strengthening some items in a study list makes it more difficult to recall other…

Two experiments examined whether over-selectivity is the product of a post-acquisition performance deficit, rather than an attention problem. In both experiments, children with Autistic Spectrum Disorder were presented with a trial-and-error discrimination task using two, two-element stimuli and over-selected in both studies. After behavioral…

The authors proposed and tested a psychological theory of causal structure learning based on local computations. Local computations simplify complex learning problems via cues available on individual trials to update a single causal structure hypothesis. Structural inferences from local computations make minimal demands on memory, require…

The present studies compare young children's explanations and predictions for the biological phenomenon of contamination. In Study 1, 36 preschoolers and 24 adults heard vignettes concerning contamination, and were asked either to make a prediction or to provide an explanation. Even 3-year-olds readily supplied contamination-based explanations,…

The purpose of this study was to improve the utility of retell protocols by more clearly identifying the testing conditions under which students demonstrate better performance. The research questions concern whether the wording of the initial prompt, the inclusion of a follow-up prompt, or the opportunity to silently re-read the passage is related…

Wayfinding is a kind of spatial riddle that people encounter almost daily. Although it has been well documented that wayfinding elements--namely, environmental cues, people and time--significantly influence wayfinding, there has been little work done to examine the effectiveness of those influences. In particular, the notion of wayfindingly…

This study investigated differences in the structure of stories created by children with attention deficit hyperactivity disorder and their comparison peers. Children created one story without pictorial cues and one with pictorial cues available. Without cues, children with attention deficit hyperactivity disorder told fewer stories based on a…

This article presents information on instructional strategies and the effective use of personnel needed for educating students with dual sensory impairments in integrated learning environments. To counter the practice of educating students in separate environments according to their most apparent weaknesses and limitations, the authors contend…

Idiopathic Parkinson's disease (IPD) has been defined as a chronic progressive neurological disorder with characteristics that generate changes in gait pattern. Several studies have reported that appropriate external influences, such as visual or auditory cues may improve the gait pattern of patients with IPD. Therefore, the objective of this…

South Africa, as a multilingual country, offers the opportunity for examining the interaction between aphasic symptomatology and the parameters of language. Effective intervention techniques depend on an understanding of clinical linguistics. This article describes an intervention study with two Sesotho-speaking individuals with anomia. Sesotho as…

In the present study, we investigate how spatial attention, driven by unisensory and multisensory cues, can bias the access of information into visuo-spatial working memory (VSWM). In a series of four experiments, we compared the effectiveness of spatially-nonpredictive visual, auditory, or audiovisual cues in capturing participants' spatial…

Translation in fluent bilinguals requires comprehension of a stimulus word and subsequent production, or retrieval and articulation, of the response word. Four repetition-priming experiments with Spanish-English bilinguals (N = 274) decomposed these processes using selective facilitation to evaluate their unique priming contributions and factorial…

A crucial task in social interaction involves understanding subjective mental states. Here we report two experiments with toddlers exploring whether they can use statistical evidence to infer the subjective nature of preferences. We found that 2-year-olds were likely to interpret another person's nonrandom sampling behavior as a cue for a…

Background: Research points to the importance of breastfeeding for promoting close mother-infant contact and social-emotional development. Recent functional magnetic resonance imaging (fMRI) studies have identified brain regions related to maternal behaviors. However, little research has addressed the neurobiological mechanisms underlying the…

This paper examines the role of morphology in gradeschool children's learning to read nonpointed Hebrew. It presents two experiments testing the reading of morphologically based nonpointed pseudowords. One hundred seventy-one Hebrew-speaking children and adolescents in seven age/schooling groups (beginning and end of 2nd, 3rd, 4th, 7th, and 11th…