Analysis of 22 mean response times (RTs) for children with specific language impairment (SLI) found that SLI children's RTs increased linearly as a function of RTs for age-matched non-SLI control children. Intergroup differences in processing speed between children with and without SLI reflect some general component of cognitive processing.…

A review of 45 published studies yielded 518 pairs of response times (RTs) consisting of a mean RT for persons with mental retardation and the corresponding mean RT for persons without mental retardation. RTs of individuals with mental retardation increased linearly as a function of RTs for persons without mental retardation in corresponding…

Studied the effects of extending the pauses between teacher questions and naming a student to respond (wait time) in 2 experiments involving 194 college students. Extending wait time from 3 to 6 seconds actually lowered higher-level cognitive achievement. (SLD)

Background: Writing is a complex activity involving various cognitive processes in the planning, the transcription and the revision of written texts. The present study focused on the revision of written texts within a developmental approach. Aims: The study aimed to examine whether children and adults use different procedures to detect and revise…

Van Breukelen offers a promising method for modeling both response speed and response accuracy. However, the underlying conception of both dependent measures is somewhat flawed, leading the author to conclude that the approach possesses limitations that, under revised assumptions, may not hold. The central misconception, and a set of related…

The present study investigated how anticipation of a target's appearance affects human attention to gaze cues provided by a schematic face. Subjects in a "catch" group received a high number of "catch" trials, in which no target stimulus appeared. Subjects in the control group did not receive any catch trials. As in previous studies, both groups…

The aim of the present research was to study age-related changes in duration reproduction by differentiating the working memory processes underlying this time estimation task. We compared performances of young and elderly adults in a duration reproduction task performed in simple and concurrent task conditions. Participants were also administered…

The detection or discrimination of the second of 2 targets in a rapid serial visual presentation (RSVP) task is often temporarily impaired-a phenomenon termed the attentional blink. This study demonstrated that the attentional blink also affects localization performance. Spatial cues pointed out the possible target positions in a subsequent visual…

Processing capacity-defined as the relative ability to perform mental work in a unit of time-is a critical construct in cognitive psychology and is central to theories of visual attention. The unambiguous use of the construct, experimentally and theoretically, has been hindered by both conceptual confusions and the use of measures that are at best…

Five experiments are reported in which standard naming and tempo-naming tasks were used to investigate mechanisms of control over the time course of lexical processing. The time course of processing was manipulated by asking participants to time their responses with an audiovisual metronome. As the tempo of the metronome increased, results showed…

To detail the structure and format of memory for texts, researchers have examined whether readers monitor separate text dimensions for space, time, and characters. The authors proposed that the interactivity between these individual dimensions may be as critical to the construction of complex mental models as the discrete dimensions themselves. In…

We indirectly determined how children with mental retardation analyze facial identity and facial expression, and if these analyses of identity and expression were controlled by independent cognitive processes. In a reaction time study, 20 children with mild mental retardation were required to determine if simultaneously presented photographs of…

In 5 experiments, the authors tested whether the processing of nonconscious spatial stimulus information depends on a prior intention. This test was conducted with the metacontrast dissociation paradigm. Experiment 1 demonstrated that masked primes that could not be discriminated above chance level affected responses to the visible stimuli that…

Although many theories of attention assume that attending to an object results in the processing of all its feature dimensions, there has been no direct evidence that the irrelevant dimensions of an attended nontarget object are encoded. This article explores factors that modulate such processing. In 6 experiments, participants made a speeded…

The purpose of the present study was to investigate the role of phonological encoding in the silent speech of persons who stutter (PWS) and persons who do not stutter (PNS). Participants were 10 PWS (M=30.4 years, S.D.=7.8), matched in age, gender, and handedness with 11 PNS (M=30.1 years, S.D.=7.8). Each participant performed five tasks: a…