The notion of "fluency" is most often associated with spoken-language phenomena such as stuttering. The present article investigates the relevance of considering fluency in writing. The basic argument for raising this question is empirical--it follows from a focus on difficulties in written and spoken language as manifestations of different…

The authors estimate weighted mean values for nine information processing parameters for older adults using the Card, Moran, and Newell (1983) Model Human Processor model. The authors validate a subset of these parameters by modeling two mobile phone tasks using two different phones and comparing model predictions to a sample of younger (N = 20;…

Three experiments examined the effects of temporal attention and aging on masked repetition and categorical priming for numbers and words. Participants' temporal attention was manipulated by varying the stimulus onset asynchrony (i.e., constant or variable SOA). In Experiment 1, participants performed a parity judgment task and a lexical decision…

Neurological immaturity, cognitive stages or lack of readiness may be erroneously inferred from young children's task performance. An alternative hypothesis suggests that an inadequate analysis of the criterion task may, in fact, account for children's inability to perform successfully. To support this thesis, investigators examined the four-part…

Explains that Rogers' proposed sequence of development in proportional reasoning is not really a modification of Inhelder and Piaget's task, but could be considered as a new task. Rogers acknowledged the explanation as a valid one. (GA)

Because previous studies had suggestd that Down Syndrome subjects did not respond to changes in directional probability within a complex motor task as did other retarded subjects, 14 Down Syndrome 18-year-olds were given training relative to the directional probability component of the task. Performance was improved but primarily in terms of…

The purpose of this study was to determine the effect of competition on the level of schizophrenic thought disorder by having groups of schizophrenics perform a task under competitive and noncompetitive conditions. (Author)

In three experiments involving situations previously called upon in support of representativeness theory, questionnaire responses from 265 university students demonstrated systematic biases that deviated sharply from the obvious predictions of the theory. The implications for representativeness theory are discussed. (Editor/RK)

Describes performer-centric interface design and explains a model-based approach for conducting performer-centric analysis and design. Highlights include design methodology, including cognitive task analysis; creating task scenarios; creating the presentation model; creating storyboards; proof of concept screens; object models and icons;…

Compared the performance of participants with Williams Syndrome on two past tense elicitation tasks with that of four typically-developing control groups. Results were consistent with the hypothesis that the Williams Syndrome language system is delayed, because it developed under different constraints. (Author/VWL)

Tests two accounts of the role of gesture in speaking. Specifically, the study seeks to establish whether gesture is involved in the conceptual planning of messages, or whether it is involved only in the generation of the surface forms of utterances. To accomplish this goal, two tasks were developed that elicit comparable utterances but make…

Attentional allocation in feature-search mode (W. F. Bacon & H. E. Egeth, 1994) is thought to be solely determined by top-down factors, with no role for stimulus-driven salience. The authors reassessed this conclusion using variants of the spatial cuing and rapid serial visual presentation paradigms developed by C. L. Folk and colleagues (C. L.…

The process-dissociation equations (L. Jacoby, 1991) have been applied to results from inclusion and exclusion tasks to derive quantitative estimates of the influence of controlled and automatic processes on memory. This research has provoked controversies (e.g., T. Curran & D. Hintzman, 1995) regarding the validity of specific assumptions…