Concepts and methods for analyzing the social system and recent advances in the technical functions of development are discussed. Four development functions are highlighted: management of the development process, formal analysis, strategy specification, and evaluation. (Author)

Describes the elaboration model of instruction and the six major steps for implementing it. (JEG)

Investigates whether many developmental phonological processes in adult's speech may be a result of problems in lexical storage and retrieval. (41 references) (GLR)

Discussion of constructivism that is based on concerns raised in an earlier issue focuses on demands placed on the learners. Three areas are explored: (1) cognitive complexity; (2) task management, to help sequence students through a learning experience; and (3) learners "buying in" to the constructivist agenda of the instruction. (10…

Discusses eight steps in the implementation of task-based learning. Presents examples from undergraduate, postgraduate, and continuing education. (MKR)

A review of applications of motion study in developmental disabilities identifies two eras of research focus in the 1990s: (1) studies establishing the effectiveness and efficiency of tasks designed with motion study principles and (2) studies examining the interaction between motion study-based task designs and other variables such as choice,…

Describes the importance of information technology literacy as a precursor to information literacy. Discusses the differences between the two literacies; instructional systems design; a methodology for identifying task knowledge to build an information literacy curriculum; and mental models that can be used to facilitate acquisition of task…

Explains Gilbert's Behavior Engineering Model that can enable the success of novice performance engineers by prompting appropriate front-end analysis and describes a performance improvement project conducted in the customer service department at an insurance agency. Discusses task clarification, employee self-monitoring, and public posting of…

Three experiments examined the changes in category representation that take place when children use exemplars for tasks other than classification. In Experiments 1 and 2, 6- and 10-year-old children learned to classify exemplars of a novel category and then used the same exemplars in an inferential prediction task. In a subsequent classification…

Five-year-old children categorized as skilled versus unskilled counters were given verbal estimation and number word comprehension tasks with numerosities 20-120. Skilled counters showed a linear relation between number words and nonsymbolic numerosities. Unskilled counters showed the same linear relation for smaller numbers to which they could…

In this article, the authors consider optimal decision making in two-alternative forced-choice (TAFC) tasks. They begin by analyzing 6 models of TAFC decision making and show that all but one can be reduced to the drift diffusion model, implementing the statistically optimal algorithm (most accurate for a given speed or fastest for a given…

The phenomenon of attentional capture by a unique yet irrelevant singleton distractor has typically been studied in visual search. In this article, the authors examine whether a similar phenomenon occurs in the auditory domain. Participants searched sequences of sounds for targets defined by frequency, intensity, or duration. The presence of a…

This study investigated the nature of advance preparation for a task switch, testing 2 key assumptions of R. De Jong's (2000) failure-to-engage theory: (a) Task-switch preparation is all-or-none, and (b) preparation failures stem from nonutilization of available control capabilities. In 3 experiments, switch costs varied dramatically across…

The map is a small-scaled version of the space it represents. It has been argued that children have difficulty interpreting maps because they do not understand scale relations. Recent research has shown that even preschoolers can solve problems that involve scaling in one dimension. This study examined whether early scaling ability extends to…

Past research on the influence of self-efficacy in training has provided mixed results. Key differences between studies pertain to whether past performance is operationalized as a residual variable or as an unadjusted variable and to the type of task used. In this study, the authors conducted and performed a reanalysis to examine the influence of…