In an attempt to specify in some canonical terms what many heuristic programs known as "expert systems" do, an analysis was made of ten rule-based systems. It was found that these programs proceed through easily identifiable phases of data abstraction, heuristic mapping onto a hierarchy of pre-enumerated solutions, and refinement within this…

This note is concerned with presenting some simple indices of group-wise relative disadvantage in the distribution of income, in terms of the distance between the group's share in total population and its share in total income. The group-wise indices are then aggregated into society-wide indices of inter-group disparity. Empirical illustrations of…

The evaluation of developmental interventions has been hampered by a lack of practical, reliable, and objective developmental assessment systems. This article describes the construction of a domain-general computerized developmental assessment system for texts: the Lexical Abstraction Assessment System (LAAS). The LAAS provides assessments of the…

This paper introduces a structural model of multigenerational relationships including the adolescent-parent relationship. The model, which perceives generational role relationships as falling within a five dimensional span includes the following: (1) intra (within the same generation); (2) direct (one generation distant); (3) bi (two generations…

Proposed a practical reinforcement hierarchy for classroom-based behavior modification programs. The seven-level hierarchy ranged from primitive consequences (Infantile Physical Contact and Food) through the more abstract consequences (Praise and Internal Self-Reinforcement). Suggestions were made for using the hierarchy in teacher consultation…