Learning to solve a class of problems can be characterized as a search through a space of hypotheses about the rules for solving these problems. A series of four experiments studied how different learning conditions affected the search among hypotheses about the solution rule for a simple computational problem. Experiment 1 showed that a problem…

There is growing evidence that the brain regions involved in encoding an episode are partially reactivated when that episode is later remembered. That is, the process of remembering an episode involves literally returning to the brain state that was present during that episode. This article reviews studies of episodic and associative memory that…

"The question for me is how can the human mind occur in the physical universe. We now know that the world is governed by physics. We now understand the way biology nestles comfortably within that. The issue is how will the mind do that as well."--Allen Newell, December 4, 1991, Carnegie Mellon University. The argument John Anderson gives…

Subjects memorized subject-verb-object propositions and then judged whether verb-object probes appeared in the same proposition. Reaction times and error rates were observed. Data indicate that activation spreads from probe concepts in parallel through the propositional network. A guessing model for errors was constructed. (CHK)

Two experiments are reported to distinguish between the representation of sentences in immediate versus longer-term memory. It is indicated that the immediate representation is a verbatim image of the sentence but at delays there are both verbatim images and propositional representations. (Author/RM)

Research is reported investigating the processes involved in rejecting certain false categorical statements. (RM)

Two experiments explored how memory for new information is affected by awareness of parallels to pre-experimental knowledge. Results suggest that the benefit of prior knowledge derives from the more elaborate encodings that analogy promotes. (Author/AM)

It is argued that human memory is adaptively designed and that much can be learned by understanding its adaptiveness. The information-retrieval problem is framed, and optimal memory behavior is derived. Applying this framework to the classic free-recall paradigm is discussed. (SLD)

This book presents a description of a new theory of memory which departs from existing concepts. It integrates and explains in detail the recent research findings in sentence memory, language comprehension, search on long term memory, verbal learning, and forgetting and imagery. It also reports new experiments which clarify these issues. A major…

Two experiments that study subjects' memory for active and passive sentences are reported. A reaction time methodology is used to measure subjects' memory for verbatim information about the sentence. Retention of verbatim information displays traditional short-term versus long-term discontinuity. (CHK)

This article has three goals: to set forth some general claims about the course of skill acquisition; to discuss a series of counter intuitive predictions derived from the ACT theory; and to review the state of empirical evidence relevant to these predictions. (LMO)

Article describes two processes in free recall: a retrieval process and a recognition process. Experiments confirmed the predicted dissociation of recognition and retrieval. (Author/ML)

Adaptive control of thought-rational (ACT-R; J. R. Anderson & C. Lebiere, 1998) has evolved into a theory that consists of multiple modules but also explains how these modules are integrated to produce coherent cognition. The perceptual-motor modules, the goal module, and the declarative memory module are presented as examples of specialized…

To determine whether different long-term memory representations are necessary for verbal and visual material, subjects studied faces composed of visual features or verbal facts composed of concepts. Findings showed interference between verbal and pictorial information, and supported the ACT theory that pictorial and verbal materials are stored…