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171.
Kindergarten children were given simultaneous discrimination tasks with two irrelevant dimensions varying within settings. Prior to each block of eight feed-back trials, the children were asked to attempt to provide a statement of the solution. The introtacts thus provided were found to have several of the desirable characteristics that have been reported for older children with either introtact or blank-trial probes, but which have not been found previously for kindergarten children with the blank-trial probe. Classification of the children according to the trial block on which they first verbalized the correct relevant dimension was found to account for more than 60% of the total variability in discrimination performance. The introtacts were also used to assign parameters to theoretical prediction equations, with nearly two-thirds of the total variability in discrimination performance accounted for by the theory. Extension of the method to other models is discussed. 相似文献
172.
Charles C. Spiker 《Journal of mathematical psychology》1977,15(1):102-108
The variable-criterion theory of simple reaction times proposed by G. R. Grice is briefly summarized. Grice's method of parameter estimation is described, and it is shown how these procedures can be converted to a least-squares estimation. Finally, the likelihood function is derived from the theory, thereby permitting use of the method of maximum likelihood for estimating the Grice parameters in experiments of simple reaction times. 相似文献
173.
Previous investigations of the effects of bogus arousal feedback on approach toward an aversive stimulus have failed to separate two conceptual issues: (1) the influence of perceived anxiety on approach behavior, and (2) the degree to which perceptions of decreased anxiety are central to systematic desensitization. The present research deals with only the first of these issues. The procedure required each subject to attach a microphone to his or her chest and approach a snake. Bogus heartbeat feedback was presented concurrently with the subject's approach. In Experiments 1 and 2, self-reported snake phobics approached more with a constant than with an accelerating heartbeat. Nonphobics in Experiment 2 were not systematically influenced by the feedback. In Experiment 3, subjects with moderate fear, but who had stated that they could pick up a snake, behaved like the previously tested nonphobics; moderate fear subjects who had stated uncertainty about their ability to handle a snake behaved like previously tested phobics. In no case did postexperimental self-rated fear of snakes yield a difference between feedback conditions. The results are discussed in terms of the attributional analysis of emotional behavior. 相似文献
174.
Ronald A. Giannetti James H. Johnson Thomas A. Williams Charles F. McCusker 《Behavior research methods》1977,9(2):133-138
Current on-line assessment applications are limited to mimicking instruments designed for paper and pencil. The development of an instrument designed specifically for on-line technology is described. The instrument provides research data on treatment effectiveness, clinical information for treatment planning, and management information for resource allocation. 相似文献
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A reversal-shift paradigm was used to study the effects of dimensional labeling on the performance of 270 kindergarten children. Task 1 was a simultaneous discrimination problem in which form, size, and color were redundant relevant dimensions, In the shift task, one of the dimensions remained relevant with reward contingencies reversed, and the other two dimensions were made irrelevant. In both tasks, the children named the stimulus object to be chosen, prior to choosing, in terms of one of the three sets of dimensionnal values. Shift performance was predicted to be superior in groups required to name relevant dimensional values in comparison with groups required to name irrelevant dimensional values. Moreover shift performance was predicted to differ, within groups, for four different types of stimulus settings. Fmally, differences in performance on the settings were predicted to be larger for the irrelevant-labeling groups than for the relevant-labelmg groups. The results were found to be in good agreement with these predictions. The findings were discussed in relation to the subproblem analysis proposed by Tighe and Tighe (1972). 相似文献
179.
Charles P. O’Brien Thomas Testa Thomas J. O’Brien Robert Greenstein 《Integrative psychological & behavioral science》1976,11(4):195-202
Eight volunteers maintained on daily methadone participated in a classical conditioning procedure to determine which if any of the elements of narcotic withdrawal could be conditioned. The unconditioned stimulus was the injection of a small dose of naloxone. The unconditioned response was a brief precipitated withdrawal syndrome. The conditioning stimulus was a tone, odor, and injection of saline. Conditioning was successful in the pilot study in 5 of 8 subjects. The conditioned response consisted of tearing, yawning, lacrimation, systolic blood pressure increase, respiratory irregularities and subjective feelings of narcotic withdrawal sickness (nausea, muscle aches, chills). A second group of 8 subjects showed, in addition to the above, evidence of conditioning of heart rate, respiratory rate and skin temperature decrease. These laboratory findings support the clinical reports of a conditioned withdrawal syndrome and suggest ways to improve treatment results by detecting and extinguishing or modifying conditioned responses. 相似文献
180.
Calvin K. Adams Deborah C. Hall H. S. Pennypacker Mark Kane Goldstein Larry L. Hench Michael C. Madden Gerald H. Stein A. Charles Catania 《Attention, perception & psychophysics》1976,20(3):163-167
Sixteen observers palpated silicone models of human breasts containing lumps 1.6-12.1 mm in diameter. Detectability depended on the size of the lump, producing a systematic psychometric function. In eight observers who participated in three or more sessions, performance improved with practice, with most improvement occurring within one or two 26-trial sessions. Three-week retention measures disclosed no appreciable decrease in performance, but a significant correlation was found between the number of lumps detected and duration of trial (p < .01). There was no difference in performance between four observers who used their preferred hands and four observers who used their nonpreferred hands. These data establish that examination of breast models for the detection of lumps simulating cancer is a task amenable to experimental analysis. 相似文献