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131.
Improvements in visual acuity following vision training were evaluated for an 11-yr-old myopic male. Initial increases in the distance at which the S could discriminate letters were found. However, performance began to deteriorate as training progressed. A negative-reinforcement procedure was employed in order to rule out motivational factors potentially related to this decreased performance. Using a changing criterion within an ABCBC reversal design, the distance at which the S correctly discriminated letters increased by more than times and was clearly related to the reinforcement procedure. 相似文献
132.
Sandi Plummer Donald M. Baer Judith M. LeBlanc 《Journal of applied behavior analysis》1977,10(4):689-705
Two single-subject experiments were conducted with students in special preschool classes. In Experiment I, the subject's disruptive, appropriate, and inappropriate play behaviors were measured as a function of three independent variables: reinforcement, a typical timeout procedure, and regularly paced teacher instructions. In an ABA reversal within a multiple baseline across two teachers, all three independent variables comprised the A conditions and procedural timeout was omitted in B. Experiment II examined a second subject's appropriate and inappropriate eating as a function of the same three variables. Two teachers conducted baseline and paced instruction-plus-reinforcement conditions in multiple baseline across teachers. Subsequently, one teacher performed a series of reversals and replications with various combinations of a typical timeout procedure and reinforcement mixed with paced instructions. The results of both experiments suggest that timeout did not produce response decrement in a punishment paradigm, but rather produced response increment in a negative reinforcement paradigm. These results prevailed, even though a reinforcer was operating in the environment before introducing timeout. Paced instructions (delivering instructions to the child at a set pace regardless of the child's behavior) appears to be an alternative when timeout is not effective and, in conjunction with reinforcement, was demonstrated to reduce inappropriate behavior to near zero. 相似文献
133.
134.
"Perhaps it would be better not to know everything." 总被引:1,自引:0,他引:1
Baer DM 《Journal of applied behavior analysis》1977,10(1):167-172
The advent of statistical methods for evaluating the data of individual-subject designs invites a comparison of the usual research tactics of the group-design paradigm and the individual-subject-design paradigm. That comparison can hinge on the concept of assigning probabilities of Type 1 and Type 2 errors. Individual-subject designs are usually interpreted with implicit, very low probabilities of Type 1 errors, and correspondingly high probabilities of Type 1 errors, and correspondingly high probabilities of Type 2 errors. Group designs are usually interpreted with explicit, moderately low probabilities of Type 1 errors, and therefore with not such high probabilities of Type 2 errors as in the other paradigm. This difference may seem to be a minor one, considered in terms of centiles on a probability scale. However, when it is interpreted in terms of the substantive kinds of results likely to be produced by each paradigm, it appears that the individual-subject-design paradigm is more likely to contribute to the development of a technology of behavior, and it is suggested that this orientation should not be abandoned. 相似文献
135.
Differential reinforcement of compliance with teacher invitations to complete a specific academic task was applied to three extremely negativistic children in a special preschool class. For each child, this technique resulted in clear and useful increases in compliance as it was applied. In addition, the technique produced a greater diversity of sampling the available tasks by all children, enabling them to contact instructional materials they had previously avoided. The reinforcement system, contingent access to free playtime, materials, and a snack, mediated by a token, was thus demonstrated to be an effective contingency. In the case of two children whose compliance was not maximized by differential reinforcement alone, further increases in compliance were produced by combining a 1-min timeout for noncompliance with the differential reinforcement procedure. 相似文献
136.
A generalized discrimination of /er/ and /est/ suffixes as labels for stimuli exemplifying comparative or superlative relationships was established in three institutionalized retardates through differential reinforcement. The subjects were first taught correct pointing in response to opposite adjectives (e.g., "big-small") presented as labels for simple visual stimuli, and then taught each of the comparatives, or each of the superlatives possible for those opposites (e.g., "big-bigger" and "small-smaller", or "big-biggest" and "small-smallest"). As training proceeded, novel combinations of the training stimuli were presented as unreinforced probes to display any developing generalization of the training. As training of comparative discrimination proceeded, correct pointing response to comparative probes was high, but correct response to superlative probes was low. When training of superlative discriminations replaced training of comparatives, correct response to superlative probes increased, and correct response to comparative probes remained high. 相似文献
137.
138.
McAllister LW Stachowiak JG Baer DM Conderman L 《Journal of applied behavior analysis》1969,2(4):277-285
The effects of teacher praise and disapproval on two target behaviors, inappropriate talking and turning around, were investigated in a high school English class of 25 students. The contingencies were applied to all students in the experimental class utilizing a multiple baseline experimental design in which the contingencies were aimed first at decreasing inappropriate talking behavior and then at decreasing inappropriate turning behavior. Observations were made of both student and teacher behavior. The results demonstrated that the combination of disapproval for the target behaviors and praise for appropriate, incompatible behaviors substantially reduced the incidence of the target behaviors in the experimental class. Observations of these behaviors in a control class of 26 students taught by the same teacher revealed no particular changes. The findings emphasize the importance of teacher-supplied social contingencies at the secondary school level. 相似文献
139.
140.
Two mothers of deviant young children were instructed to count their episodes of attention to appropriate child behavior in their homes, using wrist counters. Attention and appropriate child behavior were defined before counting began. Independent observations of parent-child interactions showed that, for each mother-child pair, the percentage of maternal attention given following appropriate child behavior increased, as did the child's appropriate behavior. Removal of the counters did not produce a reversal of the behaviors; instead the increased level stabilized. One mother was then instructed to count her attention to inappropriate child behavior and to decrease it. This instruction had little effect on her attention, and her child's behavior did not change. When both parents were again instructed to count their episodes of attention to appropriate behavior, further improvements in both mothers, and in their children resulted. These results were obtained despite inaccurate parent self-recording. Follow-up observations made over the next five months showed these behavioral gains to be durable. A third parent and his child were unaffected by this training procedure. Thus, there are instances in which self-recording may function as an effective and economical parent-training technique for effecting improvements in child behavior. 相似文献