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941.
Robert W. Proctor Alice F. Healy Trisha Van Zandt 《Attention, perception & psychophysics》1991,49(1):62-72
Several recent studies of multiletter matching have included pairs of strings that have-the-same letters in different positions (rearranged pairs). The task can be defined such that these rearranged pairs are correctly classified asdifferent (i.e., subjects respond “same” only if the strings have the same letters in the same positions—the order task) or assame (i.e., subjects respond “same” if the strings have the same letters regardless of their positions—the item task). The order task produces left-to-right serial-position effects, whereas the item task produces U-shaped serial position effects. Because these differences suggest that subjects may be able to exert strategic control over the comparison process, two sets of experiments were designed to test whether or not subjects can change the relative weightings devoted to the respective serial positions. In Experiments 1 and 2, the probability that a mismatch occurred in the different positions was manipulated. In Experiments 3 and 4, the physical spacing between letters, as well as whether or not the spaces were filled with neutral noise characters, was varied. None of the manipulations had much influence on the serial-position effects. Thus, the distinct serial-position effects for the order and item tasks apparently are mandatory and not due-to-any voluntary-comparison strategy. 相似文献
942.
Rats were trained to press a lever in the presence of a tone-light compound stimulus and not to press in its absence. In each of two experiments, schedules were designed to make the compound a conditioned punisher for one group and a conditioned reinforcer for the other. In Experiment 1, one group's responding produced food in the presence of the compound but not in its absence. The other group's responding terminated the compound stimulus, and food was presented only in its absence. When tone and light were later presented separately, light controlled more responding than did tone in the former group, but tone gained substantial control in the latter. The same effects were also observed within subjects when the training schedules were switched over groups. In Experiment 2, two groups avoided shock in the presence of the compound stimulus. In the absence of the compound, one group was not shocked, and the other received both response-independent and response-produced shock. When tone and light were presented separately, the former group's responding was mainly controlled by tone, but the latter group's responding was almost exclusively controlled by light. These effects were also observed within subjects when the training schedules were switched over groups. Thus, these single-incentive selective association effects (appetitive in Experiment 1 and aversive in Experiment 2) were completely reversible. The schedules in which the compound should have been a conditioned reinforcer consistently produced visual control, and auditory control increased when the compound should have become a conditioned punisher. Currently accepted accounts of selective associations based on affinities between shock and auditory stimuli and between food and visual stimuli (i.e., stimulus-reinforcer interactions) do not adequately address these results. The contingencies of reinforcement most recently associated with the compound and with its absence, rather than the nature of the reinforcer, determined whether auditory or visual stimulus control developed. 相似文献
943.
Automaticity is usually discussed in terms of its benefits. Automaticity has, however, a cost that manifests itself in procedures that are highly routinized but require close attention, such as verbal checklist procedures. In such procedures, errors occur because the routine leads to automaticity. In three paper-and-pen experiments, we tested this manifestation and investigated ways to decrease automaticity in verbal checklist procedures. In the experiments, subjects proofread sets of multiplication problems to detect erroneous operations, simulating the checklist procedure. In Experiments 1 and 2, two conditions were compared: a fixed-order condition (in which each set contained operations in the same order) and a varied-order condition (in which the operations were in a different order in each set). In Experiment 1, proofreading times were measured to establish the role of fixed sequential order as a consistent environment promoting the emergence of automaticity. In Experiment 2, we introduced errors into the material, and in Experiment 3 we introduced “alerting” conditions to interfere with the development of automaticity. The results indicated that the subjects in the varied-order and alert conditions detected significantly more errors than did those in the fixed-order condition. The implications of the findings for current theories of automaticity are discussed as well as those for the design of checklist procedures. 相似文献
944.
This study was designed to examine the relevance of some cognitive skills to Chinese reading and to identify those that distinguish readers of different proficiency levels. Third-, fourth-, and fifth-grade children were given two sets of tests, the Chinese Reading Proficiency Test and five component skill tests. Skills in word recognition and in comprehension were examined through tasks measuring component detection, lexical coding, memory for gist, knowledge of syntax, and use of context. Subjects' responses on the knowledge of syntax task and the lexical coding task were found to be most effective in predicting reading proficiency of the third graders, but not the fourth- and fifth-grade children. Instead, use of context task was the best predictor of the older children's reading proficiency. 相似文献
945.
Alice G. Friedman Torri Campbell Akiko Okifuji 《Journal of psychopathology and behavioral assessment》1991,13(1):45-52
The study investigated the relationship between fear and anxiety in childhood. One hundred fifty-one children aged 6 to 11 years (mean=8.7 years) completed the Fear Survey Schedule for Children-Revised (FSSC-R) and the Revised Children's Manifest Anxiety Scale (RCMAS). Correlational analyses demonstrated that the FSSC-R and each of the fear factors were significantly correlated with each other and with the RCMAS score. A stepwise regression procedure was used to determine if the FSSC-R or any of its five factors was significantly related to scores on the RCMAS. Results indicated that Factor 1 (Failure and Criticism) accounted for 31% of the variance (p < .0001)and Factor 2 (Fear of the Unknown) accounted for an additional 1% of the variance (p < .03)in the RCMAS scores. The relationship between these results and those from a similar study with adults (Goetsch, Tishelman, & Adams, 1987), as well as how the results add to an understanding of childhood anxiety, is discussed.This study was supported by BRSG Grant S07RR0714917 from the Biomedical Research Support Grant Program, Division of Research Resources, National Institute of Health, to the Research Foundation of the State University of New York at Binghamton. 相似文献
946.
Alice Jones 《Journal of Applied Psychoanalytic Studies》2000,2(2):109-115
The author offers a personal reading of James Joyce's The Dead. She focuses on how the sounds of the language are used to portray the main character's deadness and his beginning to come to life once the barriers to inner self and self-knowledge are broken. 相似文献
947.
948.
The purpose of the study was to examine the hypothesis that parents’ psychological well-being can be affected by a child’s
illness and their social situations. In this study, we discuss the roles of coping, social support and situational context
related to stress. These factors cannot only affect stress levels but can also influence whether the individual adopts a certain
type of coping style for stressful events. Parental stress, coping styles and social support were compared between groups
of parents of Hepatitis B virus (HBV) carrier children or healthy children. Results showed that parents of affected children
were significantly more stressed and psychologically at risk, and tended to mobilize personal resources and to rely more on
themselves to solve stressful life events. They also sought help from social resources more often than did parents of healthy
children. Parents of healthy children had a higher number of close friends and relatives available to them. Ninety Chinese
parents and their HBV or healthy children participated in this study. These families were all living in the city of Guangzhou,
China. 相似文献
949.
Duncan Forest Margaret S. Clark Judson Mills Alice M. Isen 《Motivation and emotion》1979,3(2):161-169
The proposition that positive feelings increase helping because they increase the perception of personal power implies that if the person prefers not to help, positive feelings would decrease helping. This was tested in an experiment that varied feelings and pleasantness of the helping task. False meter feedback was used to manipulate feelings, and an indirect check on the manipulation showed that it was effective in varying feelings. As expected from the notion that positive feelings allow the person to feel free to refuse to help, there was an interaction between feelings and pleasantness of the helping task; positive feelings produced less helping than neutral or negative feelings when the helping task was unpleasant.This research was supported by a grant from the National Science Foundation. 相似文献
950.
Discriminated response and incentive processes in operant conditioning: a two-factor model of stimulus control 总被引:2,自引:2,他引:0
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Weiss SJ 《Journal of the experimental analysis of behavior》1978,30(3):361-381
Understanding stimulus control generated in instrumental learning requires the direct investigation of discriminated response and reinforcer (incentive) processes acquired exclusively through the response-reinforcer contingencies operating on complex (multicomponent) baselines. Two series of stimulus-compounding studies accomplished this direct investigation. In one series, the independent variable was the relative reinforcement between schedule components; in the second series, it was relative response rate between components. Stimulus-compounding tests revealed that response and incentive processes enhanced each other when in agreement, counteracted each other when in opposition, and produced intermediate results when only one factor was operating. This pattern of results led to the conclusion that these factors were algebraically combining and to the development of a response/incentive matrix reflecting these dynamics. This two-factor analysis was extended to the peak-shift effect in stimulus generalization experiments and to the generation of inhibitory control. Two decades of stimulus compounding and peak-shift research were organized within this two-factor framework, extending this traditional approach to learning to active research areas heretofore not systematically considered in these terms. 相似文献