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211.
Measurement equivalence: a comparison of methods based on confirmatory factor analysis and item response theory 总被引:10,自引:0,他引:10
Current interest in the assessment of measurement equivalence emphasizes 2 major methods of analysis. The authors offer a comparison of a linear method (confirmatory factor analysis) and a nonlinear method (differential item and test functioning using item response theory) with an emphasis on their methodological similarities and differences. The 2 approaches test for the equality of true scores (or expected raw scores) across 2 populations when the latent (or factor) score is held constant. Both approaches can provide information about when measurement nonequivalence exists and the extent to which it is a problem. An empirical example is used to illustrate the 2 approaches. 相似文献
212.
Zhang H Wainwright M Byrne JH Cleary LJ 《Learning & memory (Cold Spring Harbor, N.Y.)》2003,10(5):387-393
Present models of long-term sensitization in Aplysia californica indicate that the enhanced behavioral response is due, at least in part, to outgrowth of sensory neurons mediating defensive withdrawal reflexes. Presumably, this outgrowth strengthens pre-existing connections by formation of new synapses with follower neurons. However, the relationship between the number of sensorimotor contacts and the physiological strength of the connection has never been examined in intact ganglia. As a first step in addressing this issue, we used confocal microscopy to examine sites of contact between sensory and motor neurons in naive animals. Our results revealed relatively few contacts between physiologically connected cells. In addition, the number of contact sites was proportional to the amplitude of the EPSP elicited in the follower motor neuron by direct stimulation of the sensory neuron. This is the first time such a correlation has been observed in the central nervous system. Serotonin is the neurotransmitter most closely examined for its role in modulating synaptic strength at the sensorimotor synapse. However, the structural relationship of serotonergic processes and sensorimotor synapses has never been examined. Surprisingly, serotonergic processes usually made contact with sensory and motor neurons at sites located relatively distant from the sensorimotor synapse. This result implies that heterosynaptic regulation is due to nondirected release of serotonin into the neuropil. 相似文献
213.
Lateral preference was examined in spontaneous feeding actions in 2 troops of wild vervet monkeys (Cercopithecus aethiops). Processing of 4 foods (termites, leaf shoots, sugarcane, and fruit) was studied. Actions included unimanual reaching to moving objects, operating from an unstable posture, and coordinated bimanual processing. Between 19 and 31 subjects were available, according to the task. In 2 tasks, laterality of 2 independent stages was measured separately, giving 6 measures in all. On 4 of these measures, most monkeys were ambipreferent, and only a few showed significant hand preferences. Only for termite feeding and detaching material from fruits did the majority show significant lateralization; no tasks elicited exclusive use of 1 hand. Preference appeared labile, because in 2 tasks, population trends reversed with increasing age. No population trends to left or right were found; instead, these monkeys showed ambilaterality, with lateralization associated with task complexity. 相似文献
214.
Byrne B 《Adolescence》2000,35(137):201-215
This study investigated the relationships between anxiety, fear, self-esteem, and coping strategies in a sample of 224 postprimary students (years 7, 9, and 12) in Australia. In particular, it sought to determine whether there were any significant changes between years 7 and 12 and, if so, whether these changes were gender specific. The results indicated that the girls had consistently low levels of self-esteem. The boys showed a significant decrease in both anxiety and fear by year 12. For the coping strategies, a three-factor solution accounted for 64.2% of the variance. Finally, the findings suggested that, by year 12, boys and girls were using different coping strategies, with boys more successfully reducing both fear and anxiety. 相似文献
215.
216.
Ontario Child Health Study: reliability and validity of the general functioning subscale of the McMaster Family Assessment Device 总被引:14,自引:0,他引:14
The reliability and validity of the 12-item General Functioning (GF) subscale of the McMaster Family Assessment Device (FAD) is reported here. Psychometric properties of the FAD have been previously determined, but no independent assessment has been made of the GF subscale, which was used to measure family functioning in the Ontario Child Health Study (OCHS). Reliability was measured by Chronbach's alpha and split-half correlation. Validity was assessed by hypothesizing the relationships expected between the GF scores and other family variables included in the OCHS data set. The results indicate good reliability, and all hypotheses of validity were supported. The brevity and ease of administering the GF subscale recommend it for further use in survey research in which a global assessment of family functioning is required. 相似文献
217.
Barbara M. Byrne Barry H. Schneider 《Journal of psychopathology and behavioral assessment》1986,8(3):263-279
Teacher and self-ratings of social competence were obtained for 669 (341 males, 328 females) grades 3–6 students using the Social Behavior Assessment—Revised (SBA-R) and a self-report scale consisting of the identical items reworded in first person. Factor analysis and multitrait-multimethod matrix analysis were used to validate construct interpretations. The previous four-factor structure of the SBA-R was not replicated. However, the three-factor structure that did emerge was better defined. Although student-teacher concordance was moderate for the Self-Control/Social Convention and Academic Responsibility factors, it was minimal for the Social Participation factor. Evidence of discriminant validity was weak. As with other studies using rating scales, method bias was in evidence. Sex differences were found in terms of variance explained by each factor and convergent validity. Discussion focuses on problems associated with construct validation in general and validation of school-related social competence in particular. 相似文献
218.
Alex Byrne 《Philosophical Studies》2016,173(3):831-839
Hill's views on visual experience are critically examined. 相似文献
219.
Cognitive load theorists have only recently begun to test the role of the body in learning. Tracing the index finger over the surface of instructions while reading, an embodied pedagogy based on Montessori's sandpaper letters, may hold substantial promise for learning by reducing cognitive load. Two experiments tested whether students who traced their index fingers against paper‐based worked example instructions in triangle geometry (Experiment 1; N = 52) and order of operations (Experiment 2; N = 54) would perform better on a subsequent test than students who only studied the materials visually. Students in the tracing condition outperformed the non‐tracing condition on transfer problems in both Experiment 1 (d = .78) and Experiment 1 (d = .50), but hypotheses regarding self‐reports of cognitive load during testing were not supported. Implications for research and practice are discussed. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
220.
Jones and Sigall (1971) have advocated the use of a pseudophysiological monitoring device (the bogus pipeline) as a procedure to measure the “true” feelings of experimental subjects. A comparison of the bogus pipeline and a paper-and-pencil scale as measures of attraction indicated that the monitoring device is affected by experimenter demands among high social desirability (SD) subjects (p < .03) while the simple rating scale is not. Attraction to a stranger was determined solely by attitude similarity for high SD subjects using the paper-and-pencil measure and for low SD subjects in both measurement conditions. Use of the bogus pipeline in the typical attraction experiment thus would seem to be contraindicated. These results were discussed with respect to Ostrom's (1973) criteria of relative sensitivity and functional comparability of measurement techniques. 相似文献