This model is useful in identifying specific learning problems and in providing techniques for the teacher to motivate and teach students at all levels. What it is and how it can be used are discussed, illustrated by specific strategies for geometry and science. (MNS)

Describes a study with the main objective of constructing models based on strategies students use to solve chemistry problems and to show that these models form sequences of progressive transitions termed "problemshifts" that increase the explanatory/heuristic power of the model. Results implies that the relationship between algorithmic…

Johnes and Johnes demonstrate use of data-envelopment analysis to construct an efficiency frontier comparing different UK university economics departments' efficiency without having to assign uniform weights to inputs and outputs. Since desirability of departmental goals cannot be compared, DEA's usefulness is limited to comparing relative…

Develops random-effects probit model for case in which outcome of interest is series of correlated binary responses, obtained as product of longitudinal response process where individual is repeatedly classified on binary outcome variable or in multilevel or clustered problems in which individuals within groups are considered to share…

Cobb's Cusp Surface Analysis Program (CUSP) provides a way to estimate empirically and test a nonlinear cusp catastrophe model. A model of emotion during problem solving is used to introduce catastrophe theory modeling and is discussed in conjunction with how to run and interpret CUSP. (SLD)

A new theory of subjective probability is presented. According to this theory, different descriptions of the same event can give rise to different judgments. Experimental evidence supporting this theory is summarized, demonstrating that the theory provides a unified treatment of a wide range of empirical findings. (SLD)

Discusses using the problem-solving approach to teaching vocational agriculture. Reviews the literature and the models that have evolved since the 1930s. (JOW)

This paper offers an extension of Graham Wallas' model of the creative process. It identifies periods of problem solving, incubation, and growth with specific points of initial idea inception, creative frustration, and illumination. Responses to creative frustration are described including denial, rationalization, acceptance of stagnation, and new…

Describes human-computer interface needs for empowering environments in computer usage in which the machine handles the routine mechanics of problem solving while the user concentrates on its higher order meanings. A closed-loop model of interaction is described, interface as illusion is discussed, and metaphors for human-computer interaction are…

Discussion of document ranking methods to calculate the conceptual distance between a Boolean query and a document focuses on the Knowledge-Based Extension Boolean Model which evaluates weighted queries and documents effectively and avoids problems of previous methods. Semantic networks are discussed, and is-a hierarchies are explained. (21…

Suggests a need to examine the assumptions of the program planning model and explore new ways of meeting social needs through extension education. Argues that the reductionistic program planning model is useful but only in certain situations; new ways of approaching complex social issues need to be considered. (Author/JOW)

Discussion of learning how to solve problems focuses on instructional design models and how students construct their knowledge and learn skills. Topics discussed include conceptual knowledge; procedural knowledge and skills; knowledge representation; causal knowledge; types of knowledge and relevant skills; knowledge acquisition; prediction and…

Uses structural and family systems models as basis for evaluation/treatment of grieving families. Notes that, in structural model, families can be assessed in terms of how family has attempted to fill role left by loss. Suggests that family systems approach can be integrated with structural model, demonstrating techniques to assess changes in…

Guides social work practice in assessment of dementia patients and their families using ecological-family-centered (EFC) model of practice. Case presentation illustrates how to apply ECF model while incorporating ethnically sensitive practice principles. Reviews literature on families of dementia patients, outlines intervention plan for family…

A majority of 625 Nebraska vocational educators surveyed preferred observation, work with peers, and inservice workshops for continuing education. These preferences suggest the practical problem model of continuing education should include active participation, interaction and dialoge, action and reflection, and contextual specificity. (SK)