The approach taken in this research is to develop a cognitive model of how a human observerr extracts dmcl-The information from a visual display and then uses this perceptual information in a decision-making task. Knowledge ~ e e about this relationship provides information about the occurrence of perceptual events in the course of problemsolving activities, and suggests that perceptual assista...

Complex problem solving typically involves the generation of a procedure consisting of an ordered sequence of steps. Analogical reasoning is one strategy for solving complex problems, and visual reasoning is another. Visual analogies pertain to analogies based only on visual knowledge. In this paper, we describe the use of Galatea, a computational model of visual analogies in problem solving, t...

This study examines the impact of integrating worked examples into a Cognitive Tutor for genetics problem solving, and whether a genetics process modeling task can help prepare students for explaining worked examples and solving problems. Students participated in one of four conditions in which they engaged in either: (1) process modeling followed by interleaved worked examples and problem solv...

Introduction Integration, transformation and exchange of data are well known and fast growing problems. Solving the integration problem typically requires: (1) understanding and reconciling the differences between various schemas, and (2) generation of mappings between these schemas, which will then drive any subsequent processing of data. The combination of steps (1) and (2) is a labor-intensi...

We present a computational cognitive model of mind wandering, an important cognitive phenomenon whose mechanisms are involved in insight, problem-solving, and creativity. The model posits that mind wandering begins when one is not engaged in goal-oriented cognition, whether when between tasks or when in the middle of a task but not actively thinking about one’s goal. At such times, the model th...

Molenaar’s manifesto on psychology as idiographic science [1] brought the N = 1 times 1 series perspective firmly to the attention of developmental scientists. The rich intraindividual 2 variation in complex developmental processes requires the study of these processes at the level of the 3 individual. Yet, the idiographic approach is all but easy in practical research. One major limitation is ...

Prior studies have shown that learning by problem solving in an intelligent tutoring system such as the Cognitive Tutor can be even more effective when worked examples are added in comparison to problem solving alone. Introducing selfexplanation prompts additionally improves learning. Furthermore, recent findings indicate that fading out worked examples according to students’ performance during...

Learning about fractions is a critical step on the path to high school mathematics, yet many children never master basic knowledge such as fraction arithmetic procedures. To better understand these difficulties, the present study describes a computational model of fraction arithmetic problem solving. The model demonstrates that the majority of empirically observed errors over all four arithmeti...