摘要:

Rats receiving an intracisternal injection of RNA prepared from the brain of trained rats had a better performance during seven days in the same training set‐up, than rats receiving RNA from untrained animals and rats receiving no injectio

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01045.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

Rorschach protocols of 20 persons (normals, depressives, and schizophrenics) were analysed, using the inverted, orQ, method of factoring. Three factors emerged from the analysis and corresponded to the three psychiatric categories. Groups of items, allegedly measuring the isolated factors, were applied to a second population of 42 persons resulting in validity values of an encouraging magnitude. Finally, published protocols are cited, together with a list of discriminating items and a score matrix based on such items, so that further verification can be made by the reader.

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01046.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

An attempt was made to study whether it is possible by specific training on one test to produce changes in the level of performance on similar tests and in the factor structure of a set of intelligence tests. Considerable improvement occurred in the level of performance on the test on which training was given, but no significant transfer effects to the performance on other tests were found. Slight differentiation was observed in the factor structure.

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01047.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

The effects of hyperbaric air on manual dexterity and arithmetic calculation capacity were studied in 15 subjects at ambient pressures of 4, 7, 10, and 13 ata at rest, and at 4, 7, and 10 ata during exercise (300 kpm/min). A significant reduction of the performance in both tests was observed at 10 and 13 ata at rest. During exercise in manual dexterity the reduction was significant at 4, 7 and 10 ata and in arithmetic calculation capacity at 7 and 10 ata. At 13 ata (at rest) a number of marked behavioural symptoms were observed, including changes in mood, impairment of consciousness, disturbance of perception, and deterioration of motor functions. These changes were readily reversible as soon as the pressure was lowered.

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01048.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

A distinction is discussed between manifest and latent concepts on the one hand and observable and unobservable psychological processes (of which learning is one) on the other. Previous attempts at measurement by Hull and Björkman are briefly reviewed. An analysis is presented of improved performance in terms of the latent variables of the Law of Comparative Judgment. Finally, the author's method for successive intervals scaling is applied to some paired associate learning data

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01049.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

Hysteresis, i.e. the difference between subjective midpoints of sensory distances when stimuli are presented in ascending and descending order, was studied for subjective velocity by using a modified method of sensory bisection. The hysteresis effect found differed both with regard to its size and the position of the subjective midpoints from an earlier experiment in which the same authors employed an estimation procedure.

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01050.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

Two doses diethylpropion, one dose pipradrol, one dose amobarbital and placebo were administered to 116 subjects, who rated their state on twenty variables. The variables were intercorrelated under pipradrol and pentymal. The correlation matrices were subjected to factor analysis. Four factors were found in both studies: Happiness, Alertness, Relaxation, and Flight of thoughts. There is some agreement between the two factor analyses. There were few significant effects of the drugs on factor scores, but the structure is quite unambiguous: pipradrol and diethylpropion are stimulating, and amobarbital tranquilizing.

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01051.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

Previous studies revealed a pre‐functional stage of concept learning, in that the relevant stimulus attribute aquired perceptual distinctiveness at a stage of learning when subjects as yet were unable to sort instances into appropriate categories. This early stage of perceptual learning prior to behavioral manifestation could not be identified under the novel conditions introduced in the present experiment: sensory predifferentiation training and an extra request to verbalize the concep

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01052.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY

摘要:

In a replication and extension of previous studies of concept formation, complex geometrical patterns were used to signal luck and bad luck at a wheel of fortune. Learning the concept in this setting meant learning the difference between ‘good.’ and ‘bad.’ patterns. Once more, a ‘pre‐functional’ stage of concept formation was identified. This stage has been observed (and replicated) only under a narrow range of conditions. Thus, it was not found when the reward schedule went contrary to expectations. The most important novel finding is a clearly detrimental effect of a pre‐experimental request to verbalize the difference upon post‐experimental sorting of pregnant verbal descriptions of ‘good.’ and ‘bad

ISSN:0036-5564    

DOI:10.1111/j.1467-9450.1965.tb01053.x

出版商:Blackwell Publishing Ltd    

年代:1965

数据来源: WILEY