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161.
Two retarded boys were taught to discriminate items they knew how to label (training items) from items they did not know (probe items), to respond appropriately by naming any training items, and to ask a question about any probe items. The boys did not learn to question when appropriate questioning was modelled by the experimenter; however, when they were prompted and rewarded for asking questions about some training items, they then began asking questions about probe items. Both the modelling-and prompting-reinforcement procedures were introduced in an across-subject, multiple baseline design. 相似文献
162.
Undesirable mealtime behaviors of a hospital cottage of retardates were reduced by contingent timeout procedures applied by ward personnel successively to one undesirable behavior after another, in a multiple baseline design. In some cases the timeout procedure was to remove the subject from the room until the meal was finished; in other cases (depending on the health of the child and the initial rate of the behavior to be reduced), timeout consisted of a 15-sec removal of the child's meal tray. Undesirable behaviors were defined as stealing, using fingers inappropriately, messy use of utensils, and pigging (eating directly with mouth or eating spilled food). Timeout was applied to these behaviors in that order, and in each case led to a marked and useful reduction in the behavior throughout the group. As these undesirable behaviors were reduced, more appropriate mealtime behaviors emerged: as inappropriate use of fingers declined (under contingent timeout), messy utensil behavior increased; later, as messy utensil behavior declined (under contingent timeout), a defined category of neat utensil behavior increased. Weights of the subjects were monitored steadily throughout the study and showed essentially no change. 相似文献
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Some current dimensions of applied behavior analysis 总被引:2,自引:0,他引:2
166.
Operant conditioning procedures were used to establish a generative use of the plural morpheme in the speech of a severely retarded girl. During training trials, reinforcement was presented contingent upon correct imitation of singular and plural verbalizations by the experimenter, in response to objects presented to the subject singly and in pairs. A generative productive plural usage resulted, the girl correctly labeling new objects in the singular or plural without further direct training relevant to those objects. After establishing the singular/plural usage, the contingencies were reversed (reinforcement of plural responses to single objects, and vice-versa). This produced a corresponding reversal of response by the child. The original usage was then recovered by returning to the previous contingencies. A second experiment analyzed certain error responses occurring during the first experiment, and further probed the generative nature of the subject's plural usage. It was found that errors were somewhat more likely to occur in the pluralization of words ending in vowels than of words ending in consonants. Furthermore, several words whose plurals had been learned according to the reversed plural rule, when examined later during reinforcement of normal plural usage, were found then to exemplify the normal rule being reinforced, yet without direct training. 相似文献
167.
The objectives of the study were to (1) determine if differential conditioning of eyelid responses ocurs only among subjects who accurately report knowledge of the CS-UCS relations, (2) assess whether differentially conditioned eyelid responding occurs only after the initial accurate interrial report, and (3) explore characteristics of differentially conditioned skin conductance responses (SCRs) obtained in an eyelid conditioning paradigm, with special attention to whether eyelid and SCR conditioning are similarly related to the subjects’ knowledge of the stimulus relations. Fifty-one male subjects were administered 80 differential eyelid conditioning trials, the CSs consisting of the 1,200-msec illumination of slides containing either grammatically correct or grammatically incorrect phrases. Significant differential SCR and eyelid conditioning was obtained for both V- and C-form eyelid responders, but only for subjects who accurately reported the CS-UCS relations. The initial appearance of SCR and eyelid differentiation was related within the trial sequence to subjects’ recognition of the stimulus relations. Eyelid and SCR conditioning were related similarly to knowledge of the stimulus relations, the exception being that subjects who recognized the stimulus relations late in the trial sequence did not develop reliable eyelid differentiation. 相似文献
168.
The development of new, "creative" behaviors was examined in a problem-solving context. One form of problem solving, improvisation, was defined as finding a substitute to replace the specifically designated, but currently unavailable, tool ordinarily used to solve the problem. The study examined whether preschool children spontaneously displayed generalized improvisation skills, and if not, whether they could be trained to do so within different classes of tools. Generalization across different tool classes was monitored but not specifically trained. Five preschool children participated in individual sessions that first probed their skill at improvising tools, and later trained and probed generalized improvisation in one or more of three tool classes (Hammers, Containers, and Shoelaces), using a multiple-baseline design. All five children were trained with Hammers, two were trained in two classes, and two were trained in all three tool classes. Four of the five children improvised little in Baseline. During Training, all five showed increased generalized improvisation within the trained class, but none across classes. Tools fabricated by item combinations were rare in Baseline, but common in Training. Followup probes showed that the training effects were durable. 相似文献
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Tacting and manding in correspondence training: effects of child selection of verbalization.
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We investigated correspondence between verbal and nonverbal behavior in preschool children in a play setting. Four children (4 years old) participated in a multiple baseline across subjects design. Children were asked what toy(s) they were going to play with during an immediately upcoming play period. When no contingencies were placed on either verbal or nonverbal behavior, children showed high rates of correspondence. When children were required to verbalize about a toy from a restricted range of infrequently used toys, but no contingencies were placed on correspondence, low rates of correspondence were observed. High rates of correspondence were noted when reinforcement was contingent on it. Results are discussed in terms of tacting and manding. 相似文献