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At least 19 recordsLinked to original sources
PubMed1978

Further observations on the extramacular chromatic mechanisms.

Monochromatic targets presented at 30 degrees excentricity on orange, magenta and blue backgrouds are used. A small monochromatic light, 476 nm on orange, 551 nm on magenta and 621 nm on blue, is flashed at 3 cps-1 on the centre of the targets. The size of the targets is varied and their luminance adjusted using neutral filters until the flashing light is just not visible. This method allows the study of chromatic mechanism sensitivity and of retinal interactions (summation and inhibition). Some observations in normal as well as in pathological conditions are presented.

Adult↗
PubMed1977

Field independence and laterality in the perception of faces.

For a sample of 28 college males the degree of left visual-field bias in the perception of faces correlated .45 (p less than .01) with extent of field-independent performance, as assessed by a composite score based on the Embedded-Figures Test, the Rod-and-Frame Test, and ratings on the Articulation-of-Body-Concept Scale. In a second study with 16 female and 10 male college subjects using the Group Embedded-Figures Test, field-independent subjects again showed greater left visual-field lateralization of face perception (r = .43, p less than .05). Based on Witkin's view of field independence as a manifestation of psychological differentiation, possible links between extent of differentiation at the psychological and neurophysiological levels are suggested.

Cognition↗
PubMed1977

The relationship of A-B, field dependency, and emotional openness in paranoid and nonparanoid schizophrenics.

The relationship between A-B score, Field dependency (EFT), and paranoid-nonparanoid status in 24 male acute psychiatric inpatients was explored. It was hypothesized that paranoids would score as Bs and extreme field independents (conceptual orientation), while nonparanoids would score as As and field dependents (perceptual orientation). As predicted, nonparanoids were significantly more field dependent than paranoids and controls, but no difference was found between paranoids and controls. Contrary to our hypotheses, nonparanoids were significantly more B than paranoids and controls. The only difference between paranoids and controls was that paranoids were less feeling reactive. The results were interpreted in terms of the "normality= of the conceptually oriented paranoid S.

Adolescent↗
PubMed1979

Field dependence and extraversion neuroticism on an inpatient psychiatric service.

Compared relationship between field dependence (FD) and the scales of Neuroticism (N) and Extraversion (E) using paraprofessionals (N = 22), professionals (N = 42) and psychiatric inpatients (N = 35) to elucidate the high FD found among the psychiatric inpatients. Recent evidence contradicts Witkins' (1965) early view that as a group, psychiatric inpatients would show psychopathology at the extremes of the FD continuum. The N scale was chosen because it taps a narrow behavior band, the individual's vulnerability to break down under stress. The major hypothesis that FD and N would be functionally related was based on previous empirical findings (Cattell, 1955) and Seligman's (1975) theory of "learned helplessness." Similarly, it was expected that age and sex (i.e., being female) were related functionally to FD. The latter hypotheses were supported. The hypothesis that the profiles of inpatients, professionals and paraprofessionals would throw more light on the high FD found among inpatients was not supported. The relationship between FD and N was discussed in terms of Seligman's (1975) concept of learned helplessness.

Adult↗
PubMed1979

Transformation and relational-structure schemes for visual pattern recognition. Two models tested experimentally with rotated random-dot patterns.

Two models for visual pattern recognition are described; the one based on application of internal compensatory transformations to pattern representations, the other based on encoding of patterns in terms of local features and spatial relations between these local features. These transformations and relational-structure models are each endowed with the same experimentally observed invariance properties, which include independence to pattern translation and pattern jitter, and, depending on the particular versions of the models, independence to pattern reflection and inversion (180 degrees rotation). Each model is tested by comparing the predicted recognition performance with experimentally determined recognition performance using as stimuli random-dot patterns that were variously rotated in the plane. The level of visual recognition of such patterns is known to depend strongly on rotation angle. It is shown that the relational-structure model equipped with an invariance to pattern inversion gives responses which are in close agreement with the experimental data over all pattern rotation angles. In contrast, the transformation model equipped with the same invariances gives poor agreement to the experimental data. Some implications of these results are considered.

Field Dependence-Independence↗
PubMed1979

Field dependency, brain asymmetry and psychophysiological differences.

Field dependent individuals differ psychologically from field independent subjects. They use more primitive defense mechanisms, and are more responsive to social forces around them than field independent subjects. Psychophysiological differences exist between these groups which will be reviewed. Obesity and alcoholism are also related to field dependency, as well as other psychosomatic disorders. Our series of experiments show that field dependent subjects are less left cerebrally dominant, and show most elements (in subclinical form) of a left cerebral lobe (Gerstmann's) syndrome. Implications for psychosomatic medicine are noted in the psychophysiological differences seen.

Amphetamine↗
PubMed1977

A cognitive style approach to creative thought.

Creative thinking was explored from several approaches to further understanding of the interrelationship of perception, personality, and cognition. College students (N = 45) were administered the Group Embedded Figures Test (GEFT), the Remote Associates Test (RAT), a questionnaire concerning RAT strategy, and two self-report scales. Field independent subjects were found to be significantly (p less than .001) more creative than field dependents. Correlations between the RAT and GEFT and the self-report measures of conformity and creativity, while largely nonsignificant, were in the predicted directions. Results demonstrated that advanced strategy levels and insightful responses were significantly related to high performance on the RAT. Theoretical links between cognitive style and Piagetian concepts were discussed in regard to creative thought. Overall, these findings support the contention that the creative processes should be studied, not as isolated structures, but with relational and multifaceted emphasis.

Cognition↗
PubMed1978

Black-white personality differences: another look.

Investigated the meaning of Black-White differences typically discovered on personality instruments by administering a pool of items derived from both the MMPI and California Psychological Inventory, as well as a group form of the Embedded Figures Test, to a sample of 226 black and white junior college students. A cluster analysis of the unexpectedly large number of inventory items significantly differentiating the two races produced reliable and meaningful configurations. Interpretations of race differences on these clusters and the EFT provide a new perspective on the meaning of Black-White personality differences.

Adolescent↗
PubMed1979

Correction of empty-field myopia on the basis of the dark-focus of accommodation.

The influence of negative spherical corrections on the detection of a small increment flash presented in a uniform field or Ganzfeld were determined. The range investigated included each observer's normal correction as well as values based on the focus assumed by each observer in total darkness (dark-focus of accomodation). A correction equivalent to the dark-focus resulted in maximum sensitivity. The results suggest a convenient technique for the determination of optimal correction for empty-field viewing conditions.

Accommodation, Ocular↗
PubMed1975

Field dependence and self-actualization in alcoholics.

Field independence and self-actualization were significantly increased in alcoholic patients following a 6-week treatment program. There were no differences, however, between patients treated by drug-assisted individual therapy, individual therapy, or milieu therapy. Some causal factors are hypothesized, and implications for treatment are discussed.

Adult↗
PubMed1977

Adaptive training and individual differences in perception.

Four types of training techniques were compared in the training of a perceptual concept-formation task. Adaptive training, a technique in which one parameter in the learning situation is varied so that the difficulty of a learning task remains constant for that individual, was compared to three intermediate approaches to training (self-adaptive, in which the trainees could control their own pace of learning by indicating when they felt they had mastered the problem, fixed sequence, and fixed task). The relationship between individual trainee's perceptual style and various stages of training was also investigated. Perceptual style was measured by the Hidden Figures Test, the Rod-and-frame Test, a Distracting Context Test, and a Cancellation Test. Results showed a definite (time to perform the task) advantage in favor of the adaptive training method. Fewer errors were committed under the self-adaptive approach, but the task completion time was significantly higher. Further analysis showed that for the adaptive-training group, measures of perceptual style could be used as predictors of future task success. No such relationship was found for other training techniques. In particular, field-independence appears to be important early in training but becomes increasingly less important, and for the final training criterion trials, is not predictive of performance. In contrast, the Distracting Contest Test-II, early in training, is not an important predictor but is an important predictor for the final criterion trials.

Adult↗