Effects of purpose on the organization and recall of information in person perception1

The first study investigated how the purpose for which information about a person is to be used affects the way a perceiver organizes the information. Subjects were asked to categorize and label episodes which described the behavior of a fictional person “Jill” in 64 different situations, and to summarize what each category meant to them. Half of the episodes were easily categorized according to the traits that Jill manifested, half according to features of the situations. One group (personality impression) expected later to describe Jill's personality, a second group (prediction) expected to make predictions about Jill's behavior, and a third group (recall) expected to be tested on their recall of the episodes. The results indicated that subjects in the behavior prediction group categorized the episodes primarily in terms of the personality characteristics Jill portrayed, just as the personality impression group did. In contrast, only the categories formed by the recall group paralleled the built-in structure of the episodes, i.e., they were as often based on features of the situation as on Jill's personality characteristics. A second study showed that the categorization strategies of the recall subjects actually did produce higher recall than those of the personality impression and behavior prediction subjects. The results were interpreted as suggesting that when making behavioral predictions, just as when forming impressions, the layman, like the traditional trait psychologist, prefers to organize information in terms of personality constructs rather than in a way that facilitates retrieval of everything that happened in specific situations. The cognitive costs as well as the gains produced by this strategy merit further scrutiny.     

Herzberge - a chapter in the history of psychiatry in Berlin]

This paper gives an outline of the work done at the insane asylum at Herzberge, Berlin, from 1893, the year when the asylum was established, through to World War 1. The then concept of therapy includes many basic principles that are now embraced in the term sociotherapy.     

Prototypicality and personality: Effects on free recall and personality impressions

An experiment was performed to test the hypothesis that it is easier to process information about characters who fit well with and are, therefore, “prototypical” of shared beliefs about various personality types. Character prototypicality was manipulated in a free recall and personality impression paradigm through variations in the consistency of a character's identification with preexisting beliefs about two personality-type categories—extraversion and introversion. Subjects also were given information about each character that varied in degree of abstraction from traits to concrete behavior. As predicted, both the amount and nature of the information correctly recalled were significantly affected by the consistency of the character's identification with extraversion or with introversion. Character consistency also significantly affected the amount of material written in the personality impressions and the tendency to qualify the generality of the impressions. The results support a model in which incoming data about personality are coded, structured, elaborated, and remembered according to the quality of their match with preexisting beliefs about various personality types.     

The common occurrence of errors of perceived distance

The effect on the perceived distance of a test object of fixating to a distance different from that of the test object was investigated using monocular observation and two methods for measuring perceived distance. One method, the size adjustment procedure, applying the size-distance invariance hypothesis, measured perceived distance by measuring perceived size. The results from this method were compared with those from a head-motion procedure which used the apparent concomitant motion resulting from head motion to measure perceived distance. The results from both procedures indicated that the apparent distance of the test object physically located at a constant distance varied directly as a function of the fixation distance. This occurred despite the presence of texture on the walls and floor of the visual alley. These and other perceptual effects are interpreted as demonstrating that errors in perceived distance (contrary to the theory of direct perception) are a common occurrence in ordinary visual fields.     

Group Counseling with College Underachievers

Some of the controversy concerning the efficacy of psychotherapy or counseling has been resolved by recent evidence that studies reporting no effects had indiscriminately lumped together the high and low therapeutic conditions that are associated with successful and unsuccessful outcomes. The present study extends these findings to a group of essentially neurotic underachieving college freshmen. The 24 experimental students who received group counseling showed greater improvement in grade-point average than 24 matched, non-counseled control subjects. Further, those counseled subjects who received the highest therapeutic conditions tended to show the greatest improvement.     

Individual response patterns in binary choice tasks with nondiscriminable stimuli

The present experiment sought to determine whether individual Ss tend to employ repeatedly the same response patterns in binary choice tasks containing nondiscriminable stimuli and, if so, whether the response sequences when used to construct stimulus sequences improve the performance of other choice tasks. Information and frequency analyses of the response sequences of 48 Ss showed moderate consistency of patterning within a light and within a tone task. Performance of a card task following the light and tone tasks was closely related to the task (light or tone) from which the stimulus sequence was obtained. The frequency analysis showed that repetition patterns were preferred by most Ss but at the expense of alternation responses. The presentation of reinforcement in the card task did not improve performance over that observed in the light and tone tasks.     

Operant behavior and the galvanic skin potential under DRL schedule

Motor and galvanic skin potential (GSP) activity were investigated during the conditioning, extinction, and reconditioning of motor responses under a differential reinforcement of low rate (DRL) schedule of reinforcement. Interresponse time (IRT) distributions for motor responses during conditioning and reconditioning gradually stabilized at a peak just beyond the minimal IRT required for reinforcement. Few unreinforced motor responses and "bursts" of motor responses were observed during conditioning and reconditioning. Relative to conditioning and reconditioning, extinction effected larger IRTs and smaller GSP amplitudes. GSP amplitudes were greater for unreinforced than for reinforced motor responses during conditioning and reconditioning. However, GSP amplitudes associated with the unreinforced extinction responses were smaller than either the reinforced or unreinforced responses during conditioning and reconditioning.     

Spatial orientation by mental transformation

Across three experiments, college students read narratives describing two-dimensional horizontal, sagittal, or coronal environments, each with seven objects in surrounding directions (at 45° angles). Then they responded from memory to questions about which objects were in specific directions. The distributions of error rates and response times were compared with distributions predicted by a mental transformation model and two verbal-spatial decoding and retrieval models. The data fit the predictions of a modified mental transformation model (mental transformation plus 180° exception) better than the predictions of either verbal-spatial model. This was true even though the environment was presented narratively rather than perceptually, and it was true for both the vertical planes in addition to the more typical horizontal plane. Received: 8 August 1997 / Accepted: 2 June 1998