This article presents an overview of a relatively recent cognitive architecture, and its internal control structures, that is, its motivational and metacognitive mechanisms. The chapter starts with a look at some general ideas underlying this cognitive architecture and the relevance of these ideas to cognitive modeling of agents. It then presents a sketch of some details of the architecture and...

Cognitive modeling is the creation of computer-based processes that mimic human problem-solving and task execution using existing cognitive theories. Cognitive modeling remains a labor-intensive and error prone activity with little theoretical and tool support. In this paper, we propose an approach to capturing specifications for cognitive models in an incremental and modular way. We use patter...

Effective technologies for learning and doing mathematics should be based on sound cognitive theory, be empirically tested against alternatives, and be primarily addressed at mathematics as a modeling language. I will discuss the status and promise of researchbased "intelligent" systems that support students in mathematical modeling and tool use. Such systems are beginning to reshape the mathem...

This paper describes how personality may be explained by a generic, comprehensive computational cognitive architecture. We show that a cognitive architecture by itself can serve as a generic model of personality, without any significant addition or modification. A cognitive architecture can capture the fundamental invariance within an individual in terms of behavioral inclinations as well as th...

This research advances computational cognitive modeling of visual search, and the synergistic relationship between cognitive modeling and eye tracking. The paper presents cognitive models of the perceptual, cognitive, and motor processing involved in the visual search of words in structured layouts that vary in density. The layouts are allsparse, all-dense, or mixed. A principled approach is ta...

Theories concerning the structure, or format, of mental representation should (1) be formulated in mechanistic, rather than metaphorical terms; (2) do justice to several philosophical intuitions about mental representation; and (3) explain the human capacity to predict the consequences of worldly alterations (i.e., to think before we act). The hypothesis that thinking involves the application o...

Intelligent tutoring systems often emphasize learner control: They let the students decide when and how to use the system's intelligent and unintelligent help facilities. This means that students must judge when help is needed and which form of help is appropriate. Data about students’ use of the help facilities of the PACT Geometry Tutor, a cognitive tutor for high school geometry, suggest tha...

In this paper we are interested in the computational and formal analysis of the persuasive impact that an argument can produce on a human agent. We propose a dual process cognitive computational model based on the highly influential work of Kahneman and investigate its reasoning mechanisms in the context of argument evaluation. This formal model is a first attempt to take a greater account of h...

This paper demonstrates how stereotypic student groups can be created to enhance cognitive models in computer tutors. Computer tutors use cognitive models to track what skills students are learning and what practice attempts are most needed; often, these models contain relatively few individualized student parameters due to computational concerns. A hybrid approach emphasizing tractability and ...

Inadequate sleep affects cognitive functioning, with often subtle and occasionally catastrophic personal and societal consequences. Unfortunately, this topic has received little attention in the cognitive modeling literature, despite the potential payoff. In this paper, we provide evidence regarding the impact of sleep deprivation on a particular component of cognitive performance, the ability ...