Inferences,affects, and intentions in a model of paranoia

Models of psychopathologies can be construed as modifications to the normal purposive behavior of an organism. The particular elements of purposive behavior to be emphasized here are (1) deriving facts about the environment (inferences), (2) attending to the self's needs, desires, and interests (affects), and (3) choosing directions and goals to fulfill these interests (intentions). A series of processes in a model of paranoia which performs these tasks will be described. We also describe the modifications made by the paranoid processes to the normal processes. A computer simulation has been constructed to test the model.     

Does everybody like a liker?

The primary hypothesis examined was that people giving positive evaluations are themselves regarded as more attractive than when they give negative evaluations. This research tests whether this holds when reciprocity is not at issue. Subjects in six experiments were presented with stimulus persons who varied in the proportion of positive to negative evaluations they gave of various attitude objects (political figures, cafeteria workers, cities, movies, and college courses). Giving predominantly positive evaluations did in fact lead to greater liking of the stimulus person in each experiment. This finding held over (1) audio or written interviews with the stimulus persons, (2) a variety of classes of attitude objects, and (3) both within-subject and between-subject designs. Greater liking for likers occurred even controlling for attitude similarity.     

Spatial learning in the holeboard impairs an early phase of long-term potentiation in the rat hippocampal CA1-region

Long-term potentiation (LTP) and depression (LTD) are considered as cellular models for learning and memory. We studied the impact of holeboard training on LTP in the rat CA1 hippocampal region. In 7-week-old Wistar rats a recording electrode was chronically implanted into the hippocampal pyramidal cell layer of the CA1 of the right hemisphere and a stimulation electrode into the contralateral CA3 region.Two groups of animals received a spatial holeboard training of 10 or 15 trials over 2 days on a fixed pattern of baited holes. The last trial was performed 15 min after a primed burst stimulation of the contralateral CA3, which resulted in LTP in the ipsilateral CA1. A pseudo-trained group that received a 10 trial training with changing patterns of baited holes after each trial and a group that remained in the recording chambers during the experiments served as controls. Experimental rats significantly improved their spatial performance with increasing numbers of trials, indicated by decreasing times to pick up all food pellets and by decreasing numbers of reference memory errors. A learning-related impairment of CA1-LTP measured in both the population-spike amplitude as well as the fEPSP could be noted. These results show that specific (pattern-training), but not unspecific (pseudo-training) spatial information processing prior to electrical stimulation can severely affect LTP in hippocampal area CA1.     

Perceptual asymmetries in face recognition

Four experiments were carried out to investigate perceptual asymmetries in face recognition. Perceptual asymmetries favoring the half-face on the observer's left were found under free viewing conditions for both unfamiliar faces (Experiment 1) and famous faces (Experiment 3). For unfamiliar faces, this asymmetry was not obtained when fixation was controlled by presenting faces tachistoscopically (Experiment 2). For famous faces, the perceptual asymmetry favoring the half-face normally seen on the left did not appear to be retained in memory (Experiments 3 and 4). Asymmetries in face perception have been explained in terms of a direct access model of laterally effects. However, these results raise the possibility that asymmetric scanning or attentional factors may be important.     

Temporal effects on attributions for one's own behavior: The role of task outcome

Previous investigations into how attributions for one's own behavior change over time have resulted in surprisingly inconsistent results. Two experiments were conducted to account for these discrepant findings. In Experiment 1 male undergraduates were given feedback indicating that they had done either well or poorly on a skill-assessment test. Half of the subjects believed they were being videotaped when performing the test, half did not. In addition, half of the subjects completed attribution questionnaires immediately after the feedback, whereas half completed the questionnaires 2 or 3 days later. It was found that subjects who felt they had succeeded on the task made attributions that were more dispositional over time and subjects who felt they had failed made attributions that were more situational over time. No effect for the videotape manipulation was found. Experiment 2 replicated the task outcome effect and provided evidence suggesting that the effect was caused by a selective forgetting of unflattering attributions.     

The group attribution error

There is a parallel between our tendency to infer the attitudes of an individual on the basis of his or her behavior, regardless of the external constraints (Jones & Harris, 1967; Ross, 1977), and our tendency to infer the attitudes of a group on the basis of the group's decision, regardless of the group decision rule. The present research focuses on this latter process. What we term the group attribution error consists of the tendency to assume that group decisions reflect members' attitudes. This assumption can be erroneous because group decision rules, in addition to members' attitudes, can influence group decisions. In Experiment 1, members of a community in which a water conservation law was or was not instituted were assumed to have correspondent attitudes, regardless of how the community decision was made. In Experiments 2 and 3, subjects inferred a greater correspondence between out-group decisions and out-group attitudes than between an in-group decision and in-group attitudes. The fourth experiment found that subjects committed the group attribution error because they attended as much to the outcome of a recall election as to the actual proportion of voters for and against the recall. Finally, Experiment 5 showed that subjects' inferences of jury members' attitudes were influenced not only by the final jury vote but also by the actual decision, which was determined by the vote plus the decision rule by which the jury was bound. The results are related to previous research on the fundamental attribution error, stereotyping, and polarized appraisals of out-groups.     

Criteria in lay self-judgment of anger control

The basis of judgment by laypersons in the self-evaluation of difficulties with anger control is examined. Responses to a set of 10 specific criteria of anger control problems and a self-rating of degree of problem were obtained on 190 subjects. The criteria and problem ratings were found to have satisfactory testretest reliability. Stepwise multiple regression analysis showed that certain criteria entered more than others into the self-judgments of anger control problems. Exploratory factor analysis produced three factors, interpreted as Personal Difficulties with Anger, Aggression, and Hostility, which replicated some of the previous research. Implications of the findings for a social constructivist view of self-judgment of anger and aggression and the development of self-report instruments are discussed. Additional studies with other samples are suggested.     

Human medial temporal-lobe stimulation disrupts both formation and retrieval of recent memories

Disrupting medial temporal-lobe (MTL) activity for less than a second, either during the initial presentation of a complex scene or when it is presented again 1 min later, severely impairs recognition at the second presentation. MTL disruption during both presentation and recognition periods produces further impairment. These results are not consistent with views limiting MTL function solely to encoding or solely to retrieval mechanisms.     

Sex,wage-earner status,occupational level,and job satisfaction

This study attempted to investigate the relationship between wage-earner status, occupational level, and job satisfaction. It was proposed that wage-earner status was a more important determinant of job satisfaction than sex. However, the findings of this study suggested that sex was a more important determinant of job satisfaction than wage-earner status, and occupational level was a better predictor of job satisfaction than either sex or wage-earner status.