This article presents an interpretation of autoshaping, and positive and negative automaintenance, based on a neural-network model. The model makes no distinction between operant and respondent learning mechanisms, and takes into account knowledge of hippocampal and dopaminergic systems. Four simulations were run, each one using an "A-B-A" design…

In this paper we present the "grounded adaptive agent" computational framework for studying the emergence of communication and language. This modeling framework is based on simulations of population of cognitive agents that evolve linguistic capabilities by interacting with their social and physical environment (internal and external symbol…

The spatial frequency hypothesis contends that performance differences between the hemispheres on various visuospatial tasks are attributable to lateralized processing of the spatial frequency content of visual stimuli. Hellige has proposed that such lateralization could arise during infant development from the earlier maturation of the right…

The present study investigated whether the balance of neighborhood distribution (i.e., the way orthographic neighbors are spread across letter positions) influences visual word recognition. Three word conditions were compared. Word neighbors were either concentrated on one letter position (e.g.,nasse/basse-lasse-tasse-masse) or were unequally…

A common mistake in analysis of cluster randomized trials is to ignore the effect of clustering and analyze the data as if each treatment group were a simple random sample. This typically leads to an overstatement of the precision of results and anticonservative conclusions about precision and statistical significance of treatment effects. This…

System Dynamics is a well formulated methodology for analyzing the components of a system including cause-effect relationships and their underlying mathematics and logic, time delays, and feedback loops. It began in the business and manufacturing world, but is now affecting education and many other disciplines. Having inspired by successful policy…

This paper describes a computer model that simulates experimental outcome data obtained by the manipulation of 13 independent variables reported in studies investigating the group risky shift. The model is intended as a tool for teaching research methods in an undergraduate course in social psychology. (Author)

A model is described to suggest how the visual system may keep track of perceived objects as their images move on the retina. (Author)

INS, the Integrated Network Simulation language, puts simulation modeling into a network framework and automatically performs such programming activities as placing the problem into a next event structure, coding events, collecting statistics, monitoring status, and formatting reports. To do this, INS provides a set of symbols (nodes and branches)…

Models are one of the tools of operation research which may have applications in the library field. This study is an attempt to establish a simple model for administrative purposes in a university library system. Two measures of a university library system were studied: (1) the cost of adding a volume to the collection and (2) the use of the…

It is obvious to any observer that today the social studies is in the process of a revolutionary change. It is axiomatic that one of the universal goals that all these changes are aimed at is to make social studies courses more meaningful and relevant to the life experiences of the student. One of the fastest developing innovations within the…

This report discusses the objectives and progress to date of Project PRIME: Planning Resources in Minnesota Education. These include: (1) testing the CAMPUS model at 3 institutions; (2) training to use the model; (3) developing compatible planning tools; (4) research on program analysis and faculty activities; (5) linking CAMPUS to institutional…

This article examines the affect of misfit on methods to minimize the inaccuracy of the Item Response Theory (IRT). Three of the most commonly used IRT models were fit in this simulation. (RB)

A copy of the program is available from the second author at the Department of Psychology, LSUNO-Lakefront, New Orleans, Louisiana 70122. (Authors/CB)