Passivity as a sequel to combat trauma

The author has noted a pattern of posttraumatic passivity in some combat veterans. The regression to an ego-passive stance in those men who are unable to develop an integration of nonaggressive activity and intimacy is discussed. Vietnam combat was particularly difficult for the development of a mature superego. The loss of the ego-ideal in combat, combined with insufficient societal supports blocked the mastery of the posttraumatic repetition compulsion.     

An examination of vicarious reinforcement processes in children

The primary purpose of the present investigation was to examine vicarious reinforcement processes in children. More specifically, the effects on one child of observing another same-sex child receive direct reinforcement were explored across three different age levels. Subjects were 216 children, randomly assigned to experimental or control conditions. For the control condition, neither child in the same-sex, same-age dyad received reinforcement for performance on the experimental task. For the experimental condition, one child in each dyad received direct social reinforcement for performance, while the other child received no social reinforcement for similar performance. Although children who observed other children receive direct social reinforcement initially increased performance (as predicted by vicarious reinforcement hypotheses), their performance soon decreased and was characterized by verbal and nonverbal responses which appeared to interfere with task performance (e.g., “Hey, I can do them too”, “Look at mine”, “There's no use in trying”). It appeared as if these observing children were being punished for their performance. Such effects were more pronounced for older than younger children; however, they were observed equally in boys and girls. Results were discussed in terms of vicarious reinforcement and “implicit punishment” hypotheses. Implications for applied settings were also addressed.     

An inexpensive operant chamber interface for the VIC 20 microcomputer

An inexpensive interface to connect the VIC 20 (or other Commodore microcomputer) to a single operant chamber is described. This interface is equipped to accept as inputs three separate switch closures and produces five outputs, including one to elevate a food hopper. The uses of this interface for controlling experimental events and acquiring data in real time are discussed.     

Guidance and Counseling Services in the Federal Republic of Germany

This article presents an overview of the development, implementation, and struggle to maintain guidance and counseling services at various levels within the Federal Republic of Germany.     

A maximum likelihood method for fitting the wandering vector model

After introducing some extensions of a recently proposed probabilistic vector model for representing paired comparisons choice data, an iterative procedure for obtaining maximum likelihood estimates of the model parameters is developed. The possibility of testing various hypotheses by means of likelihood ratio tests is discussed. Finally, the algorithm is applied to some existing data sets for illustrative purposes.     

Children's self-concept and attitude toward school in open and traditional classrooms

Children from a traditional school and two open schools were compared, using the Pictorial Self-Concept scale and the Attitude Toward School scale. To control for the self-selection of open school students, the traditional school subjects were divided into those whose parents favored and those whose parents did not favor open education. Three of the 12 analyses were significant, but not in the predicted, or in any orderly, direction. These results were attributed to chance. Attitude toward school was higher for females than males and decreased for kindergarden to grade 2. Self-concept increased form kindergarten to grade 2, with no significant sex differences.