Recent reinforcement-schedule research and applied behavior analysis

Reinforcement schedules are considered in relation to applied behavior analysis by examining several recent laboratory experiments with humans and other animals. The experiments are drawn from three areas of contemporary schedule research: behavioral history effects on schedule performance, the role of instructions in schedule performance of humans, and dynamic schedules of reinforcement. All of the experiments are discussed in relation to the role of behavioral history in current schedule performance. The paper concludes by extracting from the experiments some more general issues concerning reinforcement schedules in applied research and practice.     

USE OF A TOKEN ECONOMY TO INCREASE COMPLIANCE DURING HEMODIALYSIS

We report the effects of using a token economy to treat noncompliant behavior in a 10-year-old male hemodialysis patient. The results of an ABAB design indicated that the intervention increased compliant behavior during both treatment phases and that compliance was maintained at 3- and 6-month follow-up observations.     

VARIANT AND INVARIANT HIGH-PROBABILITY REQUESTS: INCREASING APPROPRIATE BEHAVIORS IN CHILDREN WITH EMOTIONAL-BEHAVIORAL DISORDERS

This study examined the effects of variant versus invariant high-probability (high-p) request sequences on the performance of requests to initiate a social bid by young children with emotional-behavioral disorders. In the initial phases of the investigation, a multiple baseline design showed that the delivery of invariant sequences (i.e., high-p requests delivered in the same sequence) produced initial increases in compliance to requests to initiate a social bid to a peer. However, increases were not maintained across the invariant condition. The delivery of variant high-p sequences produced increases in compliance to requests to initiate social bids that were maintained across the variant condition. In a follow-up condition, the number of requests within the pool of the variant and invariant high-p requests were controlled. Results of the follow-up condition replicated those found in the initial condition. Implications for applied use and future research are discussed.     

Behavioral variability in SHR and WKY rats as a function of rearing environment and reinforcement contingency.

The spontaneously hypertensive rat (SHR) may model aspects of human attention deficit hyperactivity disorder (ADHD). For example, just as responses by children with ADHD tend to be variable, so too SHRs often respond more variably than do Wistar-Kyoto (WKY) control rats. The present study asked whether behavioral variability in the SHR strain is influenced by rearing environment, a question related to hypotheses concerning the etiology of human ADHD. Some rats from each strain were reared in an enriched environment (housed socially), and others were reared in an impoverished environment (housed in isolation). Four groups--enriched SHR, impoverished SHR, enriched WKY, and impoverished WKY--were studied under two reinforcement contingencies, one in which reinforcement was independent of response variability and the other in which reinforcement depended upon high variability. The main finding was that rearing environment did not influence response variability (enriched and impoverished subjects responded similarly throughout). However, rearing environment affected body weight (enriched subjects weighted more than impoverished subjects) and response rate (impoverished subjects generally responded faster than enriched subjects). In addition, SHRs tended to respond variably throughout the experiment, whereas WKYs were more sensitive to the variability contingencies. Thus, behavioral variability was affected by genetic strain and by reinforcement contingency but not by the environment in which the subjects were reared.     

Differences in the effect of Pavlovian contingencies upon behavioral momentum using auditory versus visual stimuli.

We examined the role of Pavlovian and operant relations in behavioral momentum by arranging response-contingent alternative reinforcement in one component of a three-component multiple concurrent schedule with rats. This permitted the simultaneous arranging of different response-reinforcer (operant) and stimulus-reinforcer (Pavlovian) contingencies during three baseline conditions. Auditory or visual stimuli were used as discriminative stimuli within the multiple concurrent schedules. Resistance to change of a target response was assessed during a single session of extinction following each baseline condition. The rate of the target response during baseline varied inversely with the rate of response-contingent reinforcement derived from a concurrent source, regardless of whether the discriminative stimuli were auditory or visual. Resistance to change of the target response, however, did depend on the discriminative-stimulus modality. Resistance to change in the presence of visual stimuli was a positive function of the Pavlovian contingencies, whereas resistance to change was unrelated to either the operant or Pavlovian contingencies when the discriminative stimuli were auditory. Stimulus salience may be a factor in determining the differences in resistance to change across sensory modalities.     

Ⅱ型糖尿病患者的行为特征研究

使用修订行为特征问卷调查了１１２名Ⅱ型糖尿病患者和１４７名健康对照组。结果表明： １．男性患者比健康人更加抑郁;２．女性患者比健康人更加焦虑、抑郁和愤怒;３．不论是男性 还是女性,此问卷可显著地区分这两组,越抑郁的人,越不焦虑的人,越缺少合理化这种心理 防御机制的人,越可能是糖尿病患者。结合其它的研究结果,认为存在着Ⅱ型糖尿病易感性 行为特征,主要表现为：高抑郁;低焦虑;对应激的唤醒水平低;不善于使用心理防御机制来 保护和伪装自己;寻找一些有趣的事情：回避痛苦事件;不善于延迟的满足,要求马上得到满 足;注意易分散等。     

Family involvement and empowerment in mental health service provision for children with emotional and behavioral disorders

Involvement of families is a critical component in effective systems of care for children with disabilities and their families. We investigated the sociodemographic correlates of family involvement in mental health services for children who have emotional and behavioral disorders. Further, we investigated the relationship between family involvement and family empowerment. The Family Involvement Scale-Family Version was used to measure involvement of families in the provision of mental services for their children and the Family Empowerment Scale was used to measure pempowerment in families with children who have emotional and behavioral disorders. In additions, demographic data concerming family composition, race, education, incone, membership in a parent support group, and the mental health status of the children were also collected. The results showed that mothers, as well as respondents with less formal education, reported greater involvement in services for their children than fathers and those who were more educated. Further, the knowledge subscale of empowerment was significantly correlated with all, subscales of family involvement and personal empowerment was significantly correlated with the treatment subscale of family involvement.     

Individualized services and supports through the wraparound process: Philosophy and procedures

The wraparound process is emerging as an alternative to the traditional treatment planning processes inherent in categorical services for children and adolescents with emotional and behavioral disorders. We describe the current practices which have been developed in the field. Key elements of the value and philosophical base for the wraparound process are discussed. Proposed procedural steps are described to aid communities in the implementation of the wraparound process. Due to social and policy pressures, it is likely that wraparound process implementations will continue to develop.     

Panic Disorder: Cognitive Behavioral and Pharmacological Treatment Strategies

The past decade has seen significant advances in both psychosocial, notably cognitive behavioral (CBT), and pharmacological treatments for panic disorder. Given the widely acknowledged efficacy of both forms of treatment, it is reasonable to consider that the combination of approaches should yield an extremely potent strategy to treating panic disorder. The present report summarizes scientific evidence for the singular and combined treatment approaches to panic disorder. Data across studies indicate that combined treatments yield immediate and short-term benefits above those provided by either pharmacologic treatment or CBT alone. In the long-term, however, these benefits disappear. In fact, the combination of benzodiazepines and CBT appears to produce poorer end-state functioning than CBT alone. Other data indicate that the sequencing of pharmacotherapy and CBT may be useful for benzodiazepine fading. Although these data are preliminary, combined treatments do not appear to be the treatment of choice for patients with panic disorder. Treatment algorithms are suggested based on existing data.     

WHY NO GUIDELINES FOR BEHAVIOR MODIFICATION?

This paper reviews the guidelines for behavioral programs published by the National Association of Retarded Children. The review discusses a number of reasons why guidelines should not be enunciated for behavior modification, e.g., the procedures of behavior modification appear to be no more or less subject to abuse and no more or less in need of ethical regulation than intervention procedures derived from any other set of principles and called by other terms. The review recommends alternative methods for protecting the rights of clients who participate in behavioral programs. Specifically, behavioral clinicians, like other therapists, should be governed by the ethics codes of their professions; also, the ethics of all intervention programs should be evaluated in terms of a number of critical issues.