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81.
We compared the effects of continuous reinforcement (play) and alone conditions as controls during functional analyses for 66 individuals whose self-injurious behavior (SIB) was maintained by escape. In every case, SIB was lower during both control conditions than it was during the test (demand) condition. However, SIB was lowest during the alone condition more often than it was during the play condition. Circumstances under which the alone condition might serve as an alternative or more suitable control for escape-maintained problem behaviors are discussed. 相似文献
82.
Advances in computer technology have led to the development of a number of semiautomated systems for collecting real-time observational data. We conducted a survey of 15 developers of computerized systems and summarized the features of each system. Many of these systems have incorporated laptop or handheld computers as well as bar-code scanners. Most systems used IBM-compatible (DOS or Windows) software, although a few were designed for either the MacOS or some other operating system. The range in prices started from free to more complete systems costing over $1,500. Data analysis programs were included with most programs; however, only about a third of the systems included a program to compute interobserver agreement. 相似文献
83.
Dorothea C. Lerman Brian A. Iwata Bridget A. Shore SungWoo Kahng 《Journal of applied behavior analysis》1996,29(2):153-171
Results of basic research have demonstrated that behavior maintained on an intermittent schedule of reinforcement (INT) will be extinguished more slowly than behavior maintained on a continuous schedule (CRF). Although these findings suggest that problem behaviors may be difficult to treat with extinction if they have been maintained on INT rather than on CRF schedules, few applied studies have examined this phenomenon with human behavior in clinical settings. The purpose of this study was to determine whether problem behavior maintained on CRF schedules would be extinguished more rapidly than behavior maintained on INT schedules. Three individuals diagnosed with profound mental retardation participated after results of pretreatment functional analyses had identified the sources of reinforcement that were maintaining their self-injury, aggression, or disruption. Subjects were exposed to extinction following baseline conditions with CRF or INT schedules alternated within reversal or multielement designs. Results suggested that problem behaviors may not be more difficult to treat with extinction if they have been maintained on INT rather than CRF schedules. However, switching from an INT to a CRF schedule prior to extinction may lower the baseline response rate as well as the total number of responses exhibited during extinction. 相似文献
84.
Richard G. Smith Dorothea C. Lerman Brian A. Iwata 《Journal of applied behavior analysis》1996,29(1):99-102
Many individuals who engage in self-injurious behavior (SIB) also exhibit self-restraint. We compared rates of SIB exhibited by a 32-year-old woman diagnosed with profound retardation across conditions in which access to restraint was (a) continuously available, (b) presented as a consequence for SIB, or (c) unavailable. Rates of SIB increased when access to restraint was contingent upon SIB and decreased when restraint was unavailable, suggesting that self-restraint functioned as positive reinforcement for SIB. 相似文献
85.
Richard G. Smith Brian A. Iwata Bridget A. Shore 《Journal of applied behavior analysis》1995,28(1):61-71
Results from a number of studies have shown that individuals with profound developmental disabilities often show differential approach behavior to stimuli presented in a variety of formats, and that such behavior is a reasonably good predictor of reinforcement effects when these “preferred” stimuli are used subsequently in a contingent arrangement. Recent data suggest that reinforcement effects may be enhanced further by allowing individuals to select, just prior to training sessions, which (of several) preferred stimuli would be used as reinforcers, but whether this method is superior to one based on selection by a teacher or therapist has not been adequately addressed. We compared the effects of these two methods of reinforcer selection on rates of responding on a free-operant task, using stimuli previously identified as potential reinforcers. Results obtained with 4 subjects indicated little or no difference in reinforcement effects when stimuli were selected by subjects rather than experimenters. Implications of these results with respect to choice and its relation to reinforcement are discussed. 相似文献
86.
87.
Jennifer R. Zarcone Brian A. Iwata Christine E. Hughes Timothy R. Vollmer 《Journal of applied behavior analysis》1993,26(1):135-136
An individual's self-injurious escape behavior was treated using a high-probability instructional sequence with and without extinction. When presented alone, the high-probability sequence did not reduce self-injurious behavior. When escape extinction was implemented either alone or in combination with the high-probability sequence, self-injury decreased and compliance increased, suggesting that extinction may be a necessary component of the treatment for behavior problems maintained by escape. 相似文献
88.
It has been reported that engagement in several kinds of cognitive activity can successfully inhibit unpleasant emotions.
In this study, we tried to replicate the previous finding that cognitive activity can modulate subsequent psychological and
physiological emotional processes and to investigate whether prior cognitive activity can attenuate implicit emotional processes
triggered by subliminal emotional stimuli. Sixty students were randomly divided into three groups (cognitive task group, noncognitive
task group, control group). The cognitive task group was asked to engage in an n-back task, while the control group was asked to stay calm. The noncognitive task group was asked to do a handgrip-squeezing
task. All participants then engaged in a version of a subliminal affective priming task where they were unconsciously exposed
to affectively negative pictures. The cognitive task group showed lower negative experiences after the subliminal affective
priming task and a substantial reduction in their heart rate responses, as compared with the other groups. These results provide
evidence that engagement in cognitive activity can attenuate emotional processes in an automatic and unconscious manner. 相似文献
89.
90.
We examined articles in the Journal of Applied Behavior Analysis in which results of functional analyses indicated that problem behavior was maintained by multiple sources of reinforcement. Data for 88 (16.9%) of 521 subjects reported in 168 studies met the criteria for multiple control. Data for 11 subjects (2.1%) involved a single response topography, whereas data for 77 subjects involved multiple, collapsed response topographies (14.8% of the total [521 cases] or 87.5% of the multiple control cases), suggesting that when multiple control is observed, it often may be a by-product of response aggregation during assessment. 相似文献