国内中介效应的方法学研究

中介效应可以分析自变量对因变量的影响过程和作用机制, 已成为分析多个变量之间关系的一种重要统计方法。最近20年, 中介效应成了研究方法的一个热点。从中介效应的检验方法、效应量、类别变量的中介效应检验、纵向数据的中介效应检验和模型拓展(包括多重中介、多层中介、有调节的中介和有中介的调节模型)五个方面系统总结了国内中介效应的方法学研究的发展历程。最后对中介效应的国外方法学研究进展和中介效应的未来研究方向做了讨论和拓展。     

THE GENERALITY AND SOCIAL VALIDITY OF A COMPETENCY-BASED SELF-CONTROL TRAINING INTERVENTION FOR UNDERACHIEVING STUDENTS

We evaluated the effectiveness, generality, and social validity of a modified version of a competency-based self-control package developed by Stevenson and Fantuzzo (1984). Three underachieving fifth-grade students were trained to use this intervention to increase their arithmetic proficiency. Results indicated that the intervention produced improved arithmetic performance. Moreover, all possible classes of generalization were evidenced for the participants. Social validity data showed that the children's arithmetic performance either surpassed or approached the mean performance of their higher achieving classmates. Additionally, teachers reported that the intervention was effective, appropriate for classroom use, and easy to implement.     

ACQUISITION OF SIGN LANGUAGE BY AUTISTIC CHILDREN II: SPONTANEITY AND GENERALIZATION EFFECTS

Autistic children typically do not use their language repertoire in order to communicate. Six autistic children who exhibited poor communication skills were trained to use their sign repertoire to make spontaneous requests of adults. Training consisted of imitative prompting, fading, and differential reinforcement, and included aspects of incidental teaching. The children displayed an increase in the rate and variety of spontaneous sign requests (Experiment 1). Generalization of spontaneity across adults (Experiments 1 and 2) and settings (Experiment 2) was also observed. We suggest that spontaneity may be facilitated when language is brought under the control of broadly defined stimuli such as adult attention rather than narrowly defined stimuli such as the presence of specific objects or verbal prompting in the form of questions. Finally, response generalization was observed as well (Experiment 1). Specifically, as spontaneity increased, self-stimulatory behavior decreased. This result may be accounted for in terms of reinforcer competition, reinforcer consistency, or discriminative stimulus effects.     

Using Behavioral Skills Training to Promote the Generalization of Parenting Skills to Problematic Routines

Research has demonstrated the efficacy of a behavioral parent training program for skills acquisition; however, few studies have examined the extent to which those skills generalize to the home or the effect that they have on child behavior. A multiple baseline across participants design was used to assess (a) caregiver accuracy with implementation of three parenting skills, and (b) the effects of the parenting skills on child behavior. Results demonstrated that three caregiver participants successfully generalized parenting skills taught during behavioral skills training (BST) to naturally occurring routines, and the behavior of each caregiver's child improved following BST.     

分类和概念对恐惧泛化的影响机制

恐惧泛化与多种焦虑障碍的病理基础密切相关。例如创伤后应激障碍个体往往持续地逃避与创伤事件有关的刺激,遭受着创伤痛苦折磨。本文在厘清知觉辨别与恐惧泛化关系的基础上,着力于高级认知过程(分类与概念相似性、典型性和人工概念)对恐惧泛化的影响,回顾了恐惧泛化的相关神经机制,并揭示恐惧泛化对焦虑障碍患者的临床治疗启示。未来研究应将知觉和高级认知维度的恐惧泛化进行整合研究,同时扩充恐惧习得和泛化的神经回路,以促进人类恐惧泛化更深入的研究。     

On Stimulus Generalization and Stimulus Classes

Stimulus generalization has been defined as the spread of effect of reinforcement for responses emitted in the presence of one stimulus to different stimuli presented under extinction conditions. As a result of stimulus generalization, novel stimuli come to exert stimulus control over members of the response class. Studies in the applied behavior analysis literature, however, have reported experimental preparations that included prompting and reinforcement procedures during what were claimed to be stimulus generalization conditions. These studies violated the procedural requirement that stimulus generalization be tested under extinction conditions. Responses that come under the control of a class of stimuli may do so by direct training or by stimulus generalization. It is desirable for organisms to respond in the presence of members of an appropriately constructed stimulus class, but we should understand the mechanism of entry into the class by its members. If inaccurate claims of stimulus generalization are made when training procedures are used in the ostensible generalization conditions, the robustness of the original training procedures will be over estimated. By adhering to the operational requirements of behavioral definitions, we could better understand the power and limits of our educational and training procedures.     

Generalization of the disruptive effects of alternative stimuli when combined with target stimuli in extinction

Differential‐reinforcement treatments reduce target problem behavior in the short term but at the expense of making it more persistent long term. Basic and translational research based on behavioral momentum theory suggests that combining features of stimuli governing an alternative response with the stimuli governing target responding could make target responding less persistent. However, changes to the alternative stimulus context when combining alternative and target stimuli could diminish the effectiveness of the alternative stimulus in reducing target responding. In an animal model with pigeons, the present study reinforced responding in the presence of target and alternative stimuli. When combining the alternative and target stimuli during extinction, we altered the alternative stimulus through changes in line orientation. We found that (1) combining alternative and target stimuli in extinction more effectively decreased target responding than presenting the target stimulus on its own; (2) combining these stimuli was more effective in decreasing target responding trained with lower reinforcement rates; and (3) changing the alternative stimulus reduced its effectiveness when it was combined with the target stimulus. Therefore, changing alternative stimuli (e.g., therapist, clinical setting) during behavioral treatments that combine alternative and target stimuli could reduce the effectiveness of those treatments in disrupting problem behavior.     

Reasons of love: an introduction

One of the main reasons for philosophers to have embraced Humean constructivism rather than Kantian constructivism is a negative one: they believe that in the end Kantian constructivism is an unstable position. Their idea is that the Kantian constructivist can either choose to hold on to the idea of categorical reasons for action but in that case she has to be prepared to commit to (robust) moral realism (which both Humean and Kantian constructivists reject) or alternatively, she might reject (robust) moral realism but in that case she has to give up on the idea of categoricity. The aim of this paper is to defend Kantian constructivism against Humean constructivism and more specifically against recent objections raised by Sharon Street. I will do so by arguing that Kantian constructivism follows from formal, normative commitments that pertain to instrumental reasoning that Humean constructivists like Sharon Street themselves accept. More specifically I will argue that categorical reasons for action follow from applying the principle of instrumental rationality to the first-person perspective of an agent, provided that there are certain necessary means for action in general. From this follows, I will argue, that Humean constructivists should either become Kantian constructivists or that they have to become sceptics about normativity.     

传言对人际信任影响的泛化效应

本研究使用学习-测试范式考察传言对人际信任影响的泛化效应。学习阶段,被试对中性面孔和不同效价的传言或真实信息进行配对学习;测试阶段,被试作为投资者与陌生对家完成信任投资游戏,对家面孔与学习面孔具有40%相似性。结果发现,传言能够影响学习面孔的信任,并调节与学习面孔相似的对家面孔的信任投资;同时,传言对信任投资的影响只发生在女性对家身上。上述发现揭示传言对人际信任能够进行选择性泛化。