The water jug task model was extended to four variations of the Missionaries--Cannibals river-crossing problem. Different cover stories resulted in large differences in number of illegal moves, but no difference in number of legal moves to solution. The three-stage process model explains both legal and illegal moves. (Author/GDC)

Authority-task problems are organizational problems created by inconsistencies between the task process system and both the authority system and the formal hierarchy of offices. A new theory is used to develop a model that predicts how an administrator responds to an authority-task problem. (Author/IRT)

A theory is proposed of the processes which enable a subject to learn while solving a problem. One subject's protocol--including 224 steps and taking 90 minutes--is described. Adequacy of the mechanisms is guaranteed by a computer simulation of the processes in an adaptive production system. (Author/GDC)

This report describes the third study in a program of research dealing with the relationships between the characteristics of human tasks and the abilities required for task performance. The goal of the program is to generate principles which can be used to identify ability requirements from knowledge of the characteristics of a task and of…

Performance and persistence on the Concealed Figures Test and the Embedded Figures Test decreased: (1) after short-duration failure when subjects were falsely led to attribute failure to task difficulty; and (2) after long-duration failure when subjects were falsely led to attribute failure to lack of ability. (CP)

The model for planning groups presented in this paper is an attempt to provide varying levels of organizational leaders with a device to increase planning efficiency and effectiveness. The planning process is highlighted as it might be viewed through the eyes of the individual responsible for completion of the planning task. The major emphasis is…