Behavioral contrast: Research and areas for investigation

Behavioral contrast occurs when a change in reinforcement rate in one context results in a change in behavior in the opposite direction in an unchanged context. Despite decades of study by basic researchers, behavioral contrast has remained largely an unstudied phenomenon among applied researchers. The purpose of this paper is to occasion translational and applied research on behavioral contrast with the aim of predicting and controlling socially significant behavior in unchanged contexts. We present a brief history of contrast and related definitions, review research with human and nonhuman subjects, and suggest future directions for applied and translational researchers.     

Functional analysis and treatment of problem behavior related to mands for rearrangement

This study is a systematic replication of a functional analysis (FA) of the relation between mands and problem behavior. We extended treatment approaches for this problem behavior function, and describe the treatment of problem behavior related to mands for rearrangement demonstrated by a 12‐year‐old girl with autism spectrum disorder and Smith‐Magenis syndrome. The mands consisted of requests for others to change their body positioning or proximity, or rearrange items back to their original position. An FA confirmed the relation between problem behavior and mand compliance, and functional communication training with extinction decreased problem behavior and increased functional communication responses. Problem behavior remained low as gradually longer nonreinforcement periods were introduced using a multiple schedule.     

决策与判断研究中的个体分析(英文)

决策与判断研究中(甚至是实验心理学研究中)的许多问题关注某效应是否真实存在,及其背后的解释是什么。这些问题不关注该效应在某一特殊群体中是否显著。因此,可以通过分析单个被试来检验效应的显著性。如果有一个被试表现出了该效应,那么,这个效应就是存在的。根据这一观点,有时也可通过跨案例或者轮次(across cases or rounds)分析来验证效应的显著性,而不需要进行跨被试分析(across subjects)。这一观点也暗示在一些实验中可能存在反方向的效应。本文建议通过进行基于被试个体的统计分析来检验这样的效应,并介绍了一些不同形式的方法:PP概率图(probability probability plots);P值分布检验(tests of the distribution of p-values);分层取样多重检验的矫正(correction for multiple testing with step-down resampling)。这些方法都可以用于处理在对同样假设进行多重检验时无法避免的问题。另外,本文也列举了一些例子,其中有一部分例子存在反方向的效应,另一部分例子不存在。     

左主干或多支冠脉病变的选择:PCI或CABG?

近年来,PCI技术越来越多地实践于左主干和多支冠脉病变,但与CABG相比,其疗效一直受到质疑。本文对近年来PCI和CABG的疗效比较做一总结,发现对于左主干和冠脉多支病变,CABG仍优于PCI。但随着生产力水平的发展和社会需求越来越高的双重作用下,两项技术都必然会有新的发展,两者疗效的比较还会继续,我们将拭目以待。     

Strengthening parent well‐being at the work—family interface: A German trial on workplace Triple P

This study examines the efficacy of a parenting training (Workplace Triple P (WPTP)) especially designed for the needs of employed parents. The program aims to reduce stress at the work–parenting interface by targeting family risk and protective factors and assisting parents to manage competing work and family demands. Ninety‐seven part‐ and full‐time working parents (74 mothers and 23 fathers; intervention group: n = 42 parents; waitlist‐control group n = 55 parents) from multiple organizations and multiple occupations with children between 2 and 10 years were randomly assigned to an intervention and a waitlist‐control condition. After the training, parents from the intervention condition, compared to those from the waitlist‐control condition, reported a significant reduction in individual and work‐related stress. Additionally, they reported a significant reduction in dysfunctional parenting and significant higher levels of parental and occupational self‐efficacy. Within the intervention condition all effects were maintained at the 3‐ and 6‐month follow‐up examinations. The findings support the notion that WPTP promotes parental well‐being and reduces stress at the work–parenting interface. Given that strengthening parenting skills has the potential to strengthen work, strategies to implement WPTP in organizational resources and community‐based services are discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

Predicting preference for items during periods of extended access based on early response allocation

Top‐ranked items were identified during 30‐min free‐operant preference assessments for 9 individuals. Data from each session were analyzed to identify the item (a) that was engaged with first in each session and (b) to which the most responding was allocated after 5 min, 10 min, 15 min, 20 min, and 25 min had elapsed in each session. The results indicated that the first‐engaged item and the 5‐min high‐allocation item predicted the top‐ranked item in 55% and 62% of the sessions, respectively. The results also showed that engagement with the top‐ranked item from the first session decreased across subsequent sessions for 6 of the 9 participants. The implications of the results for brief versus extended stimulus preference assessments are discussed.     

Discriminated functional communication: a procedural extension of functional communication training

A limitation associated with communication-based interventions for problem behavior is the potential for requesting reinforcement at high rates. Multiple-schedule arrangements have been demonstrated to be effective for controlling rates of responding (Hanley, Iwata, & Thompson, 2001). In the current study, we extended previous research by teaching individuals to attend to naturally occurring discriminative stimuli (e.g., caregiver behavior) instead of arbitrary stimuli (e.g., picture cards). Following successful treatment with functional communication and extinction, 2 participants were taught to request attention differentially based on whether the caregiver was engaging in a variety of "busy" (e.g., talking on the phone) or "nonbusy" (e.g., reading a magazine) activities. Following training, each participant engaged in communication primarily when caregivers were engaged in nonbusy activities.     

Developing stimulus control of the high-rate social-approach responses of an adult with mental retardation: a multiple-schedule evaluation

We evaluated a multiple schedule in which the extinction (S-) components were signaled overtly by a black lanyard and the reinforcement (S+) components were not correlated with any programmed stimuli in developing stimulus control over the high-rate social-approach responses of an adult with mental retardation. Responding was consistently low in the presence of the S- and consistently high when the lanyard was absent (i.e., the S+ condition). Component durations were thinned successfully to a level that was manageable for caregivers.     

Cognitive diagnosis models for multiple strategies

Cognitive diagnosis models (CDMs) have been used as psychometric tools in educational assessments to estimate students’ proficiency profiles. However, most CDMs assume that all students adopt the same strategy when approaching problems in an assessment, which may not be the case in practice. This study develops a generalized multiple-strategy CDM for dichotomous response data. The proposed model provides a unified framework to accommodate various condensation rules (e.g., conjunctive, disjunctive, and additive) and different strategy selection approaches (i.e., probability-matching, over-matching, and maximizing). Model parameters are estimated using the marginal maximum likelihood estimation via expectation-maximization algorithm. Simulation studies showed that the parameters of the proposed model can be adequately recovered and that the proposed model was relatively robust to some types of model misspecifications. A set of real data was analysed as well to illustrate the use of the proposed model in practice.     

Web‐based stimulus preference assessment and reinforcer assessment for videos

This study replicated and extended the use of a web‐based multiple‐stimulus‐without‐replacement preference assessment (Curiel, Curiel, Li, Deochand, & Poling, 2018) by adding a web‐based single‐operant reinforcer assessment. Five adults diagnosed with autism spectrum disorder participated in this study. The web‐based program identified preference hierarchies for 4 of the 5 participants, and the single‐operant reinforcer assessment confirmed that the highly preferred videos functioned as reinforcers. Advantages of computer‐based stimulus preference and reinforcer assessments are discussed.