Are children reliable reporters?

Fifty children, ranging in age from 6 to 16 years, and their mothers were interviewed using the same structured interview, which in its content follows the usual psychiatric examination of a child. Their answers were compared and it was found that there was an 80% average agreement on all questions. The agreement (between child and parent) was highest on questions relating to factual information (84%) and the agreement (between child's interviewer and parent) was lowest in the section dealing with mental status (69%). Girls were more reliable informants than boys.     

A computer-controlled language training system for investigating the language skills of young apes

A computer-controlled language training system was designed and constructed to enhance the objectivity and efficiency of inquiry into the language-relevant behaviors of apes. The system allows the S to gain control over the events of the 24-h day in direct correspondence with its competence in using a keyboard on which each key represents a word. Various incentives can be obtained through the selection and depression of appropriate keys in accordance with rules of sentence structure monitored by a computer. The system is flexible and allows for eventual conversation between man and ape, with the computer as the intermediary. A Teletype records all that transpires. Achievements of the chimpanzee S over the course of the first 8 months of the system’s operation attest to the worth of the system and training methods.     

Effects of perceived similarity on vicarious emotional conditioning

The present experiment tested the hypothesis that perceived similarity between observers and models enhances vicarious emotional conditioning. Subjects were led to believe that they were either similar to the model in beliefs and attitudes, different from him or were given no information about him. They then underwent a vicarious classical conditioning procedure by witnessing the model express pain reactions in conjunction with a neutral stimulus. Observers developed emotional reactions to the neutral stimulus alone after seeing it paired with modeled pain expressions. Preceived similarity, however, had no significant effect on either the level of vicarious conditioning or the rate of extinction. Subjects who had no information concerning the model displayed stronger autonomic responses to the model's pain expressions, and more frequent and intense autonomic responses to the conditioned stimulus during tests for acquisition and extinction. In correlational analyses, subjects in the latter condition also yielded a significant positive relationship between self-reported arousal and vicarious emotional conditioning. The obtained findings were interpreted in terms of the emotion arousing properties of unfamiliarity.     

The role of contextual cues in mediating transfer

An experiment was conducted with sceond-grade children to test the hypothesis that contextual (task format) changes limit the transfer of learning. The Ss learned two problems employing different formats concurrently and were then given a single transfer problem similar in format to one of the training problems. The transfer data were predictable from a consideration of the similar format training problem and independent of the different format training problem. This indicated that contextual cues were stored during training and played a role in determining transfer.     

The optimal number of alternatives at a choice point with travel time considered

The problem of optimal design is considered for tasks that can be represented as n choice points with a_i alternatives per choice point. Examples are mazes or multiple choice tests. Some fixed time t′ elapses between choice points, say traveling from one to the other or reading a question, and additional time t is spent considering each alternative at the choice point. For fixed total time, the goal is to find the optimum number of choice points and the optimum number of alternatives at each choice point. In general, the longer the time spent between choice points, the greater the optimum number of alternatives at each point.     

Personality traits and their relationship to traffic violations.

There is a relationship between personality traits of enlisted personnel at one mid-west Air Force Base and their frequency of moving violations. The 52 individuals who received one or two moving violations were more emotionally stable than the 33 non-offenders and the 18 chronic offenders. Discriminant analysis showed significant differences between the personality characteristics of the occasional offender and the other two groups, but none between the chronic offender and the non-offender. The personality characteristics of the chronic offender resembled those of Zelhart's alcoholic offender and Dunbar's "accident-prone" individual. Additional research using a more heterogeneous sample might make possible identification of the high-frequency traffic violator by means of personality characteristics measured after his first offense.