The integration defect in paranoid and nonparanoid schizophrenia.

Tested a theory of schizophrenia which views the central defect as an inadequate integration of perceptual and cognitive processes. Instead of combining these processes as normals do, paranoids emphasize cognitive processes, whereas nonparanoids emphasize perceptual processes. 10 nonparanoid and 10 paranoid patients and 10 control Ss (hospital aides), all 18-60 yrs old, listened to sentences ending in high-, or low-probability words masked by 1 of 5 levels of white noise. As predicted, paranoids identified the masked word significantly more accurately than nonparanoids when task performance was facilitated by cognitive processes (expectation of the probable ending). When expectations operated to decrease performance (improbable endings), subgroup performance tended to reverse, although differences were not significant. The prediction that normals' performance would be intermediate in both conditions was confirmed. Controls performed more like paranoids on probable end words but more like nonparanoids on improbable end words. Moreover, signal detection analysis showed that paranoids were biased toward high-probability responses, whereas nonparanoids were biased toward low-probability responses, thus deviating from normals in opposite directions. (34 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predictions of others' responses in a mixed-motive game: Self-justification or false consensus?

Examined speculations by D. M. Dawes et al (see record 1977-25298-001) concerning the extent to which persons use their own responses in mixed-motive situations as a basis for predicting the behavior of others. 172 female undergraduates played a 1-trial Prisoner's Dilemma game and predicted the responses of their partner and a person in another dyad. As predicted, Ss, irrespective of the particular choice they had made, tended to attribute their own response to others. In many Ss, this attribution appeared to be self-justifying, in that it was specific to the S's partner. Even more frequently, Ss attributed their own response to both partner and nonpartner (i.e., a false consensus), although they also tended to be more confident about their prediction of their partner's choice. (10 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Size estimation, perceptual recognition, and cardiac rate response in acute paranoid and nonparanoid schizophrenics.

Studied perceptual response styles of 8 paranoid and 8 nonparanoid schizophrenics in a VA hospital using size estimation and perceptual recognition tasks. Eight alcoholic patients were used as controls. Only acute, actively psychotic, unmedicated schizophrenics were included. Heart rate responses were monitored during the performance of the tasks. Psychological task performance and concomitant physiological responses were analyzed and integrated. The size estimation results replicate earlier findings. During the perceptual recognition task, the paranoid Ss showed a unique "jump to conclusions" response strategy. Early responding and response rigidity was not found to be specific to paranoid schizophrenics. All schizophrenic Ss showed more large-magnitude heart rate response during both tasks. The relationship between perceptual responses and physiological responses differed among the groups. (45 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Schizophrenic memory-search performance involving nonverbal stimulus properties.

Investigated schizophrenic memory-search performance by conducting a memory-search choice-reaction-time (CRT) task involving nonverbal stimulus properties (real-life sizes of items). Procedures were designed to diminish ambiguities concerning previous evidence of possible schizophrenic impairment in scanning and comparison operations involving memory-held items. Ss (aged 18–60 yrs) were 20 paranoid and 20 nonparanoid schizophrenics, 20 psychiatric controls, and 20 normal Ss. Results indicate that scanning and comparison operations proceeded at comparable rates among the schizophrenics and controls. On the other hand, rates of encoding the presented stimulation for a given trial (the trial's probe item) into a task-facilitative format proceeded at a slower rate among the paranoid Ss in particular. Discussion focuses on specific memory-search CRT paradigmatic conditions in which intact speed of memorial item comparisons tended to be most evident among these patients. Results resemble earlier observations of the present 2nd author (see record 1978-31872-001) on memory-search CRT performance among paranoid and nonparanoid schizophrenics when probe stimulation has remained in view throughout each trial. (38 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Speed of perceptual functioning in chronic nonparanoid schizophrenics: Partial replication and extension.

Results of a partial replication of a study by A. J. Yates and P. Korboot (see record 1971-06730-001), with 3 groups of 10 chronic nonparanoid schizophrenics, paranoid schizophrenics, and psychotic depressives as Ss, confirm the finding of the extreme slowness of functioning in chronic nonparanoid schizophrenics. The finding was extended by showing that this group was also significantly slower than chronic psychotic depressives when inspection time was measured uncontaminated by verbal response time. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Embedded figures performance of schizophrenics as a function of chronicity, premorbid adjustment, diagnosis and medication.

Presents data on the Embedded Figures Test (EFT) performance of 487 schizophrenics and other hospitalized patients divided in terms of chronicity, premorbid adjustment, diagnosis, and medication. Results indicate that chronicity was related to EFT performance, with chronic Ss generally more field dependent than acute Ss. Some schizophrenics, however, were relatively field dependent when entering the hospital and did not change with extensive hospitalization. Medication interacted with premorbid adjustment and diagnosis, with the medicated poor paranoid performing in a field-independent manner while the nonmedicated poor paranoid was quite field dependent. The effects of institutionalization are discussed. (21 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Thematic productions under hypnotically aroused conflict in age regressed and waking states using the real-simulator design.

Gave 10 hypnotic female Ss and 10 highly susceptible simulating Ss (undergraduates) a cognitive task as well as thematic stimuli using conflict-arousing suggestion. Compared with simulating Ss, hypnotic Ss tended to give more direct drive expression responses, produced greater changes in affective-motivational states (age regressed vs waking) on 1 of the 2 thematic cards, produced more intense emotional reactions in the age-regressed condition, were unable to demonstrate age-appropriate cognitive functioning in the age-regressed condition, and reported more vivid and emotional experiences during the age-regressed condition. The findings taken together support, at least partially, the "altered state" model of hypnosis. (36 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Creativity and schizophrenia: An equivalence of cognitive processing.

Two tests of creativity were given to 10 paranoid and 10 nonparanoid schizophrenics, 10 nonpsychotic psychiatric controls, and 10 normal Ss. Ss were aged between 18 and 50 yrs. Scores on vocabulary and similarities tests, as well as education, medication, marital status, socioeconomic background, and age, were examined. Results indicate that nonparanoid schizophrenics were significantly more creative than paranoids and psychiatric controls on one creativity measure, a graded level measure of the Alternate Uses Test. Also, nonparanoid schizophrenics produced a significantly higher percentage of "highly creative" responses than did normals. Nonparanoid schizophrenics also scored higher than the other groups on the Welsh Figure Preference Test, but this finding was found to be related to age rather than to schizophrenia. The superior performance of the nonparanoid schizophrenic is discussed in terms of the encouragement that a supportive, nonjudgmental testing environment provides. (35 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Same–different judgments in paranoid and schizophrenic patients: A laterality study.

12 normal, 12 paranoid, and 12 nonparanoid schizophrenic Ss were presented with arrays of stimuli to the left, right, or both hemispheres and told to say whether all the stimuli in the array were the same or different. Results fail to confirm the hypothesis that there is a dysfunction of hemispheric operation in paranoid or nonparanoid schizophrenia. There was, however, some evidence that paranoid patients scanned more than did nonparanoid or control Ss. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Fabrication of delusional thinking in normals.

Tested a learning model for paranoid development by requiring Ss in the laboratory to fabricate ideation under conditions approximating those thought to be conducive to actual clinical delusions. Measures used on the 92 male undergraduate Ss included the Parent Attitude Research Instrument, the Parent–Child Interaction Rating Scales, and the Adjective Check List. Ss proposed to be susceptible to paranoid ideation, that is, late-adolescent males who have adopted an open style of adapting to the aversive-maternal-control experience, demonstrated the proposed signs of delusional thinking in their belief systems. Ss were required to formulate a rationale for the view that they believed others held concerning them. The open-style group, relative to control groups, provided beliefs that were more extensive, less credible, more concerned with negative information, and, for the more extended beliefs, better integrated and more presumptive of outside social influence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Representational boundaries in role portrayals among paranoid and nonparanoid schizophrenic patients.

Studied the boundary properties of self and other representations in 31 normal Ss (mean age 18.8 yrs) and in 18 paranoid (mean age 21.2 yrs), 14 intermediate (mean age 21.9 yrs), and 16 nonparanoid (mean age 22.1 yrs) inpatient schizophrenics, using a dramatic role-playing technique. Role test and Rorschach responses were scored for presence of fluid and rigid boundaries between representations of human characters. Paranoid schizophrenics evidenced higher levels of rigid boundaries, nonparanoid schizophrenics had higher levels of fluid boundaries, and normal Ss showed fewer fluid or rigid boundaries. Rorschach and role test measures of boundary disruption were significantly correlated with each other and with other measures of psychopathology. Findings suggest that the relative balance between fluid and rigid representational boundaries is an effective discriminator of paranoid and nonparanoid subtypes and that the presence of either type of boundary imagery discriminates schizophrenics from normal Ss. (31 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Temporal stability and cross-situational consistency of affective, behavioral, and cognitive responses.

Examined consistency and stability of feelings in reports that were completed on 3,512 occasions randomly sampled from the lives of 42 undergraduates. Over a 6-wk period, Ss completed a mood inventory at times indicated by an alarm watch. The stability and consistency of responses depended on the situations, individuals, and responses involved. High degrees of consistency were unusual for single responses, although mean levels of responding tended to be both highly stable and consistent. The consistency and stability of variables covaried, suggesting a connection between the two. Ss who were more consistent across one pair of situations tended to be more consistent across other situational pairs. Results indicate that the question of whether personality consistency exists does not have a simple answer and requires knowledge of the persons, situations, responses, and level of analysis involved. (41 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of information source status and dogmatism upon conformity behavior.

This study explored the relationship between degree of authoritarianism, as measured by Rokeach's (1960) Dogmatism Scale, and susceptibility to influence by individuals of high and low social status. College Ss were placed in the autokinetic problem (see 10: 1332); a confederate of E, introduced as either a research scientist or a high school senior, gave his responses to the situation prior to S. The confederate's judgments were contrived so as to disagree with S's. Ss high in authoritarianism tended to agree with (conform to) the responses of the "scientist"; Ss low in authoritarianism, with the "high school student." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sensitivity of paranoid patients to nonverbal cues.

To test the hypothesis of a special sensitivity on the part of paranoid patients to nonverbal cues, 2 videotapes were prepared for viewing by 24 hospitalized paranoid patients and 24 normal Ss. Half of each group saw a videotape of genuine stimuli, and half saw a videotape of simulated stimuli. The stimuli consisted of 40 6-sec shots of the same 4 persons on each tape. The faces of the persons were shown as they watched 2 lights serving as signals. For the genuine tape, electric shock was administered to the stimulus person at the cessation of a red light, but none after a white light; for the simulated tape, stimulus Ss posed their expectation. Viewing Ss judged whether, at each presentation, the stimulus person on the videotape expected or did not expect to receive an electric shock. Paranoid Ss demonstrated significantly higher accuracy than normals for genuine stimuli, while normal Ss were significantly more accurate than patients for simulated stimuli. Normal Ss were more accurate for simulated stimuli than they were for genuine stimuli, while patients were not. Data support the hypothesis. (28 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reduced range of sensory sensitivity in chronic nonparanoid schizophrenics.

Used a forced-choice auditory signal-detection method to test the hypothesis that, compared to acute paranoid schizophrenics, chronic nonparanoid schizophrenics would show a restricted range of sensitivity to environmental cues. 40 male chronic nonparanoid and paranoid schizophrenics served as Ss. Ability to detect the presence of an auditory cue, while concurrently tracking a visual stimulus, was measured under 2 conditions, auditory monitoring being given primary or secondary importance. In this task, a narrowed range of sensitivity implies a greater deficit in ability to detect the auditory cue when the primary focus is placed elsewhere. This deficit was significantly greater in the chronics in both initial and replication experiments. The function of restricted sensitivity in limiting the range of both relevant and distracting stimuli that are responded to by chronic nonparanoid schizophrenics is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sodium homeostasis in chronic decerebrate rats.

Two experiments examined physiological and behavioral concomitants of sodium need in supracollicularly transected and pair-fed intact male Sprague-Dawley rats. Chronic decerebrate Ss, like intact Ss, reduced their urine sodium output when placed on a sodium-deficient diet. Similarly, 24 hrs after sodium loading, decerebrate and intact Ss excreted comparable levels of the excess sodium. In the 2 hrs immediately following loading, decerebrate Ss excreted less sodium. In contrast, behavioral aspects of sodium homeostasis were completely absent in chronic decerebrate Ss. In separate experiments, intraoral intake and taste-reactivity responses elicited by intraoral infusions of NaCl were measured during sodium-replete and sodium-deficient conditions. In response to oral infusions of NaCl, intact Ss consumed significantly more and produced greater numbers of ingestive taste-reactivity responses when they were sodium deficient than when they were sodium replete. The same sodium-depletion treatments in chronic decerebrate Ss, however, altered neither the intraoral intake of NaCl nor the frequency of NaCl-elicited ingestive taste-reactivity responses. Results suggest that the behavioral compensatory responses that follow changes in the internal sodium state depend on forebrain mechanisms. (53 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repression and hypnotic amnesia: A failure to replicate and an alternative formulation.

In an attempt to replicate and extend a study by S. R. Clemes (see record 1965-02178-001), 2 groups of 10 undergraduate hypnotic Ss learned a list of 18 words and were given an amnesia suggestion telling them they would be able to remember only 10 of these words. Half of the list words were critical (i.e., considered to be related to repressed conflictual material) and half were neutral (unrelated to conflictual material) as determined by Ss' responses to a word association test. Experimental Ss received their own critical and neutral words and yoked control Ss received the critical and neutral words of experimental Ss. Neither the experimental nor the yoked control group exhibited selective amnesia in favor of critical words, thus constituting a failure to replicate Clemes's result. However, variables affecting the degree to which words were initially learned (e.g., imagery value, serial position) predicted their resistance to amnesia. These findings are inconsistent with a repression hypothesis but congruent with an inattention hypothesis of suggested amnesia. (41 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Restricted use of success cues in retrieval during posthypnotic amnesia.

Evaluated memory for successful and unsuccessful responses to hypnotic suggestions in partially amnesic Ss and in those Ss with normal forgetting. Two analyses (278 undergraduates) demonstrated that highly hypnotizable Ss experiencing partial posthypnotic amnesia tended to show no selective recall for their successes or failures during amnesia, whereas the remainder of the Ss showed definite selective recall of hypnotic success posthypnotically. These findings support F. J. Evans and J. F. Kihlstrom's (see record 1974-06307-001) hypothesis that posthypnotic amnesia involves a disruption of memory organization and suggest that the phenomenon may be mediated by a restriction in the use of normally employed retrieval cues. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Selective attention to threatening stimuli and field independence as factors in the etiology of paranoid behavior.

Tested a theory that selective attention to threatening stimuli induces paranoia. An attempt was made to manipulate attention to threatening and nonthreatening statements among 60 college students and examine the effects on 3 indices of paranoia. Although manipulation checks indicated that attention was varied in the desired manner, hypothesized results in which selective attention to threatening statements would lead to greater scores on the paranoia measures were not found. However, a measure of field independence showed a predicted positive correlation with the indices of paranoia for Ss who were manipulated to attend selectively to threatening statements. These same correlations tended to be negative or zero among Ss manipulated to attend to nonthreat and among unbiased attenders. These data suggest that susceptibility to development of paranoid behavior through selective attention to threat cues may increase as a function of field independence. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)