Prior lesion and functional imaging studies have highlighted the importance of the left ventral occipito-temporal (LvOT) cortex for visual word recognition. Within this area, there is a posterior-anterior hierarchy of subregions that are specialized for different stages of orthographic processing. The aim of the present fMRI study was to…

Purpose: The ability to focus and sustain one's attention is critical for learning. Children with autism demonstrate unusual characteristics of attention from infancy. It is reasonable to assume that early anomalies in attention influence a child's developmental trajectories. Therapeutic interventions for autism often focus on core features of…

The immediate-early gene early growth response gene-1 (EGR-1, zif-268) has been extensively studied in synaptic plasticity and memory formation in a variety of memory systems. However, a convincing role for EGR-1 in amygdala-dependent memory consolidation processes has yet to emerge. In the present study, we have examined the role of EGR-1 in the…

Clinical intuition and resent research (Senju et al., 2009) suggests that adults with high-functioning autism (HFA) are able to use explicit verbal information but fail to react upon subtle nonverbal cues in order to understand others and navigate social encounters. In order to investigate the relative influence of different domains of socially…

In humans, visual information is processed via parallel channels: the parvocellular (P) pathway analyzes color and form information, whereas the magnocellular (M) stream plays an important role in motion analysis. Individuals with autism spectrum disorder (ASD) often show superior performance in processing fine detail, but impaired performance in…

While research into the role of semantic structure in the recognition of written and spoken words has grown, it has not looked specifically at the role of conversational context on the recognition of isolated words. This study was a corpus-based and behavioral exploration of a new semantic variable--sociality--and used on-line behavioral testing…

The current study was designed to examine the possible existence of two limited-capacity pools of central executive resources: one each for verbal and visuospatial processing. Ninety-one college students (M age = 19.0, SD = 2.2) were administered a verbal working memory task that involved updating numbers in 2-, 3-, and 4-load conditions. The task…

When paying attention to a feature (e.g., red), no attentional advantage is gained in perceiving items with this feature in very brief displays. Therefore, feature-based attention seems to be slow. In previous feature-based attention studies, attention has often been measured as the difference in performance in a secondary task. In our recent work…

When something unique is present in a scene, this element may become immediately visible and one has the impression that it pops out from the scene. This phenomenon, known as "pop-out" in the visual search literature, is thought to produce the fastest search possible, and response times for the detection of the pop-out target do not vary as a…

A framework for action planning, called "ideomotor theory," suggests that actions are represented by their perceivable effects. Thus, any activation of the effect image, either endogenously or exogenously, will trigger the corresponding action. We review contemporary studies relating to ideomotor theory in which researchers have investigated…

Human response time (RT) data are widely used in experimental psychology to evaluate theories of mental processing. Typically, the data constitute the times taken by a subject to react to a succession of stimuli under varying experimental conditions. Because of the sequential nature of the experiments there are trends (due to learning, fatigue,…

The fluency and the reliability of speech production suggest a mechanism that links motor commands and sensory feedback. Here, we examined the neural organization supporting such links by using fMRI to identify regions in which activity during speech production is modulated according to whether auditory feedback matches the predicted outcome or…

Utterances made by teachers to meet various educational aims in the classroom have a certain effect on student learning. The quality of teachers' linguistic acts influences efficiency in all aspects of the methods, techniques and strategies used in the instructional process. This study has been conducted to reveal the verbal behaviors that…

One method of conducting preference assessments with individuals who have autism involves measuring the time spent by the child engaging with various stimuli. Engagement is generally defined as showing interest in the stimulus but few studies have investigated the potential effects of the quality of engagement with the stimulus on reinforcer…

The task-switch paradigm has helped psychologists gain insight into the processes involved in changing from one activity to another. The literature has yielded consistent results about switch cost reconfiguration (abrupt offset in regular task-switch vs. gradual reduction in random task-switch; endogenous and exogenous components of switch cost;…