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321.
The problem of inferring the validity of a selection test (x) as a predictor of some criterion (y) when completexy data are not available is investigated. The basic approach is to construct the predictive probability distribution of the
unobservedy scores and then derive interval estimates of the least squares regression weights, the difference in averagey scores for selected and unselected cases, and the residual variance in predictingy fromx. Further, an approximation to the predictive distribution of the squared correlation betweenx andy in a future group is derived. 相似文献
322.
Research in cerebral laterality supports the idea that functional differences between the left and right hemispheres exist with respect to cognitive style and perceptual ability. Related research, which has examined autonomic nervous system (ANS) correlates of cerebral laterality, suggests that a component of the ANS, electrodermal activity (EDA), is also lateralized. Some findings in the literature report the occurrence of bilateral asymmetries in phasic and tonic EDA as a function of a left or right hemisphere preference for information processing. This experiment used normal male subjects who were either left or right movers in a test of Conjugate Lateral Eye Movement (CLEM). This selection procedure served to maximize a subject’s preference for either a right or left hemisphere mode of information processing. Bilateral EDA was recorded continuously while subjects performed a visual recognition task using word (left hemisphere) and shape (right hemisphere) stimuli. The data do not support the contention that performance on a procedure chosen to selectively activate a given hemisphere elicits asymmetric tonic and/or phasic EDA. The results show no significant difference in the frequency of elicited skin conductance responses under either of the experimental conditions. Bilateral tonic EDA rose continuously over time and did not vary in either hand as a function of task. The present results fail to offer support for either of the hypotheses which argue for I) increased contralateralexcitation with selective hemispheric activation, or 2) increased contralateralinhibition of the EDR with hemispheric arousal. 相似文献
323.
324.
Alan L. Gross 《Psychometrika》1981,46(2):161-169
In predicting
scores fromp > 1 observed scores
in a sample of sizeñ, the optimal strategy (minimum expected loss), under certain assumptions, is shown to be based upon the least squares regression weights
computed from a previous sample. Letting
represent the correlation between
and the predicted values
, and letting
represent the correlation between
and a different set of predicted values
, where w is any weighting system which is not a function of
, it is shown that the probability of
being less than
cannot exceed .50. The relationship of this result to previous research and practical implications are discussed. 相似文献
325.
326.
327.
Disturbed and normal adolescent girls from a working class background were compared on three measures of sex role as well as self and ideal personality characteristics. Both disturbed and normal girls had an appropriate sex-role identity on two of the measures. An association was found between normal status and high self scores on nurturance, affiliation, and endurance, and between pathological status and succorance. Although differences existed on some self reported traits between pathological and normal status, all groups tended to see the ideal female teenager as having an equitable balance among the personality variables and higher than they rated themselves on deference, nurturance, and affiliation and lower on autonomy. It was concluded that the presence or absence of certain adaptive personality traits may be more important than sex role disturbance in pathology. 相似文献
328.
329.
F. P. Gross 《Journal of School Psychology》1968,6(4):271-274
Teachers' associations are becoming increasingly militant. They tend not to represent psychologists in negotiations. School psychologists need both representation and to take a position in relation to work stoppages. He has the following options: (a) identify completely with the teachers' association and its methods and goals and refuse to report during work stoppages; (b) identify with management and perform management duties during the stoppage; or (c) negotiate separately with boards of education, but neither take part in the work stoppage nor assume duties beyond his normal role and function. The last appears to be the better alternative provided the psychologist makes his position clear to both labor and management organizations prior to a work stoppage. 相似文献
330.
Mapping Space With Neurons 总被引:1,自引:0,他引:1