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71.
72.
Kenneth Hugdahl Mikael Franzon Britta Andersson Gunilla Walldebo 《Integrative psychological & behavioral science》1983,18(4):186-198
Direction of changes in heart-rate responses (HRR) were investigated in three separate experiments as a measure of differential cognitive and emotional specialization of the cerebral hemispheres. Visual stimuli were presented via the visual half-field technique in all three experiments. Slides with different contents were flashed for 200 msec on each trial either to the left or right of a center LED fixation point. The LED went on 5 seconds prior to slide onset. HR changes were scored as second-by-second deviations during 10 seconds after LED onset from pre-LED base line. In the first experiment it was hypothesized that emotionally relevant stimuli initially projected to only the right hemisphere would result in more anticipatory acceleration than when the same stimulus was initially projected to the left hemisphere. A picture of a snake and of a geometric figure were repeatedly briefly flashed to the right of the LED for half of the subjects, and to the left for the other half. There were 25 trials with an intertriai interval of 25–40 seconds. Results showed significant effects of deceleration as a function of the slide stimulus in all groups on seconds 5, 6, or 7 after onset of the center LED. Furthermore, an anticipatory acceleration was observed during the first trial-block on seconds 3 and 4 in the right hemisphere groups only with no differences between the neutral and emotional stimuli. In Experiments 2 and 3, a letter-string of six letters and a complex symmetric pattern were used as stimuli. These stimuli were chosen because previous research has clearly implicated the hemispheres to be differentially specialized in their ability to process verbal and visuo-spatial stimuli. The set-up was identical to Experiment 1, with the exception that differences in response to the two types of stimuli were evaluated on a within-subjects basis. The results from Experiments 2 and 3 showed stimulus-related deceleration, peaking on seconds 5–7 in all groups and an anticipatory acceleration peaking on seconds 3 and 4 in the right hemisphere groups, with decelerations during the corresponding seconds in the left hemisphere groups. The results are discussed in relation to recent findings by Walker and Sandman (1982) about the possibility of hemispheric specialization in psychologic influences on heart rate changes in response to environmental demands. 相似文献
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BjRn Lyxell Jan Andersson Ulf Andersson Stig Arlinger GRan Bredberg Henrik Harder 《Scandinavian journal of psychology》1998,39(3):175-179
In the present study cognitive performance in 15 deafened adult cochlear implant candidates was examined and related to level of speech understanding after 12 months of experience with the implant. The implant group performed on par with normal hearing controls in all cognitive tasks used in the study with one exception: Performance was significantly lower in cognitive tasks where use of a phonological representation of sound is a key task-demand. Observations of the implanted individuals’ level of speech understanding indicate that only those individuals who, pre-operatively, were in possession of phonological representations comparable to that of normal hearing could follow and understand a speaker that was out of sight. The results are discussed with respect to (a) deterioration in the phonological representation of sounds as a function of absence of external auditory stimulation, and (b) the role of cognitive factors in predicting success in speech understanding with the implant. 相似文献
76.
Tom Andersson 《Journal of psycholinguistic research》1995,24(5):377-404
The article spells out some guidelines for a dialectic theory of concepts. Concept formation is treated in terms of polemic and polar reference. The main thesis is that opposite references structure concepts by way of advocacy. On polar dimensions of comparison, (e. g., light versus dark), people select and advocate objects of comparison in agreement with the context of comparison (i.e., what is light depends on what is dark, and vice versa). In principle, any concept is subject to polemics because polarity enables opposite comparisons, (e.g., an object as dark and light with reference to lighter and darker objects, respectively). When opposite comparisons apply to the same object, reference becomes anomalous which will motivate conceptual change, (e.g., twilight accounts for a reference in between). Consequently, meaning is not secured by general rules but concepts presuppose advocated references; concepts are intentional constructs. The dialectic theory is illustrated by a case study of the environmental discourse on forest management. Conflicting references fuelled by industrial and environmental values demonstrate how opposite comparisons motivate revisions.Dialectic is a convenient technical name for the kind of thinking which takes place when human beings enter into dispute, or when they carry on in reflection the polemical consideration of some theory or idea. Adler, 1927, p. V 相似文献
77.
Alf L. Andersson Ingrid Fries Gudmund J. W. Smith 《Scandinavian journal of psychology》1970,11(1):7-16
Experiments with projected negative afterimages and with the aftereffects of a rotating spiral were performed serially (repeated stimulus presentation). In the middle of the sequences the experimental groups were subjected to subliminal threat by means of a metacontrast technique. The effects of threat on the latter part of the sequences were according to predictions and differed markedly from the results in control groups. 相似文献
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Björn Andersson Hao Luo Kseniia Marcq 《The British journal of mathematical and statistical psychology》2022,75(2):395-410
Reliability of scores from psychological or educational assessments provides important information regarding the precision of measurement. The reliability of scores is however population dependent and may vary across groups. In item response theory, this population dependence can be attributed to differential item functioning or to differences in the latent distributions between groups and needs to be accounted for when estimating the reliability of scores for different groups. Here, we introduce group-specific and overall reliability coefficients for sum scores and maximum likelihood ability estimates defined by a multiple group item response theory model. We derive confidence intervals using asymptotic theory and evaluate the empirical properties of estimators and the confidence intervals in a simulation study. The results show that the estimators are largely unbiased and that the confidence intervals are accurate with moderately large sample sizes. We exemplify the approach with the Montreal Cognitive Assessment (MoCA) in two groups defined by education level and give recommendations for applied work. 相似文献
80.
Oscar Andersson 《Journal of the history of the behavioral sciences》2014,50(1):79-103
Social scientists have mostly taken it for granted that William Foote Whyte's sociological classic Street Corner Society (SCS, 1943) belongs to the Chicago school of sociology's research tradition or that it is a relatively independent study which cannot be placed in any specific research tradition. Social science research has usually overlooked the fact that William Foote Whyte was educated in social anthropology at Harvard University, and was mainly influenced by Conrad M. Arensberg and W. Lloyd Warner. What I want to show, based on archival research, is that SCS cannot easily be said either to belong to the Chicago school's urban sociology or to be an independent study in departmental and idea‐historical terms. Instead, the work should be seen as part of A. R. Radcliffe‐Brown's and W. Lloyd Warner's comparative research projects in social anthropology. 相似文献