Single-case experimental designs for behavioral neuroscience

Single-case experimental designs (SCEDs) are commonly used in behavior analytic research but rarely used in behavioral neuroscience research. The recent development of technologies that allow control of the timing of neurobiological events such as gene expression and neuronal firing enable the fruitful application of SCEDs for the study of brain–behavior relations. There are at least 3 benefits expected from applying SCEDs to study how neurobiological events affect behavior. First, SCEDs entail direct within- and across-subject assessments of reliability, likely increasing the probability of replication across studies and encouraging a search for the causes of replication failure when they occur. Second, SCEDs focus on behavior in individual organisms producing a body of knowledge that applies to individuals rather than population parameters. Finally, SCEDs require fewer animals, decreasing costs and effort and addressing the ethical obligation to reduce the number of animals used for research. Examples are provided using hypothetical data generated based on published research. Collaborations between behavior analysts and behavioral neuroscientists will bring the world within the skin under direct experimental control and broaden our understanding of the determinants of behavior.     

Calculating savings to the nation from counselling services: Methodological challenges

The research endeavoured to develop and pilot a system to demonstrate savings to the nation resulting from counselling provided by a national voluntary agency. This paper demonstrates the methodological challenges encountered. A questionnaire was developed, focused on four broad dimensions of clients’ lives: Employment & Income, Health, Personal & Social, and Children. The questionnaire was piloted by eight counselling centres, and applied pre‐ and post‐intervention. It proved not always possible to attribute clear savings within the dimensions measured. Direct health‐related costs and sick days off work were relatively straightforward. However, for less tangible factors, e.g. personal and social, and children, it was not possible to attribute direct financial amounts to any improvements. The pilot, therefore, attributed savings where possible. Attrition was a major difficulty, with 976 pre‐intervention questionnaires reducing to only 159 post‐intervention. This paper indicates the challenges of estimating savings to the nation from counselling interventions, and illustrates a flexible flowchart which allows savings and costs to be attributed as and when available. Although no final calculations of savings to the nation are included, it is believed that the learning from the methodological challenges encountered should be useful to other services wishing to assess the financial costs and savings of psychological therapies and counselling.     

Single-case design standards: An update and proposed upgrades

In this paper, we provide a critique focused on the What Works Clearinghouse (WWC) Standards for Single-Case Research Design (Standards 4.1). Specifically, we (a) recommend the use of visual-analysis to verify a single-case intervention study's design standards and to examine the study's operational issues, (b) identify limitations of the design-comparable effect-size measure and discuss related statistical matters, (c) review the applicability and practicality of Standards 4.1 to single-case designs (SCDs), and (d) recommend inclusion of content pertaining to diversity, equity, and inclusion in future standards. Within the historical context of the WWC Pilot Standards for Single-Case Design (1.0), we suggest that Standards 4.1 may best serve as standards for meta-analyses of SCDs but will need to make clear distinctions among the various types of SCD studies that are included in any research synthesis. In this regard, we argue for transparency in SCD studies that meet design standards and those that do not meet design standards in any meta-analysis emanating from the WWC. The intent of these recommendations is to advance the science of SCD research both in research synthesis and in promoting evidence-based practices.     

Translating experimental paradigms into individual-differences research: Contributions,challenges, and practical recommendations

Psychological science has long been cleaved by a fundamental divide between researchers who experimentally manipulate variables and those who measure existing individual-differences. Increasingly, however, researchers are appreciating the value of integrating these approaches. Here, we used visual attention research as a case-in-point for how this gap can be bridged. Traditionally, researchers have predominately adopted experimental approaches to investigating visual attention. Increasingly, however, researchers are integrating individual-differences approaches with experimental approaches to answer novel and innovative research questions. However, individual differences research challenges some of the core assumptions and practices of experimental research. The purpose of this review, therefore, is to provide a timely summary and discussion of the key issues. While these are contextualised in the field of visual attention, the discussion of these issues has implications for psychological research more broadly. In doing so, we provide eight practical recommendations for proposed solutions and novel avenues for research moving forward.     

Exercise, changes in aerobic capacity, and changes in self-perceptions: An experimental investigation

Subjects in an exercise training condition participated in a 10-week aerobic exercise class, whereas subjects in waiting-list control and independent control conditions did not. The results indicated that subjects in the training condition evidenced reliably greater improvements in physical fitness (aerobic capacity) and reported reliably greater improvements in their abilities and confidence in both the physical area (e.g., ability to run distances) and nonphysical area (e.g., frustration tolerance) than did subjects in the control conditions. On the other hand, improvements in physical fitness were not related to reported improvements in abilities and confidence. These findings are of interest because they indicate that some of the important personal changes that are associated with physical fitness training are not due to changes in fitness, but appear to be due to other factors (e.g., group participation and expectancies).     

Multilevel meta-analysis of single-subject experimental designs: A simulation study

One way to combine data from single-subject experimental design studies is by performing a multilevel meta-analysis, with unstandardized or standardized regression coefficients as the effect size metrics. This study evaluates the performance of this approach. The results indicate that a multilevel meta-analysis of unstandardized effect sizes results in good estimates of the effect. The multilevel meta-analysis of standardized effect sizes, on the other hand, is suitable only when the number of measurement occasions for each subject is 20 or more. The effect of the treatment on the intercept is estimated with enough power when the studies are homogeneous or when the number of studies is large; the power of the effect on the slope is estimated with enough power only when the number of studies and the number of measurement occasions are large.     

谣言传播的情境、内容、传播者与受众特征及相关认知神经科学研究

什么样的谣言更容易获取信任、得到传播？面对谣言,为何有人理性批判,有人则毫不犹豫地点“赞”、转发？这是大众和研究者们共同关注的问题。本文主要从情境、内容特征、传播者与受众特征这三个维度论述了影响谣言传播的因素。从情境特征来看,谣言在模糊且具有潜在威胁的情境中更易传播,封闭的舆论场也助长了谣言传播;从内容特征来看,包含适当情绪内容、针对特定对象的谣言更易得到传播;从传播者与受众特征来看,一方面,可靠消息源会增强人们的传播意愿;另一方面,受众的认知局限、人格特质、动机、价值观等,均可能造成认知偏差或歪曲,助长谣言传播。以往研究多采用问卷调查法,今后需要更多严格控制变量的实验研究,从行为和神经层面深入探讨谣言传播的机制。最后,社交媒体数据采集与分析技术的发展,尤其是计算传播学等交叉学科的发展,为谣言传播研究提供了新的思路和方法。     

Information and communication technologies in teaching applied and experimental designs

In this work, an innovative teaching model applied to methodological contents in psychology is presented. The proposed didactic model includes Information and Communication Technologies (ICT), such as CD-ROMs, web sites and Internet. These resources complement class attendance. In the classes the students are informed, guided and oriented so that they are able to obtain information and reorganize it in a coherent way. The aim of this article is to find out the students' learning preferences and estimate the incorporation of ICT, by means of the ETIM (Evaluation of Teaching Innovation Model) questionnaire. The results show that the students are aware of the need to consult other materials and that ICT helps students to understand the subject from various perspectives. In this way, the students become more autonomous in acquiring learning results.     

Intentional action and the frame-of-mind argument: new experimental challenges to Hindriks

Based on a puzzling pattern in our judgements about intentional action, Knobe [(2003). “Intentional Action and Side-Effects in Ordinary Language.” Analysis 63: 190–194] has claimed that these judgements are shaped by our moral judgements and evaluations. However, this claim goes directly against a key conceptual intuition about intentional action – the “frame-of-mind condition”, according to which judgements about intentional action are about the agent’s frame-of-mind and not about the moral value of his action. To preserve this intuition Hindriks [(2008). “Intentional Action and the Praise-Blame Asymmetry.” The Philosophical Quarterly 58: 630–641; (2014). “Normativity in Action: How to Explain the Knobe Effect and its Relatives.” Mind & Language 29: 51–72] has proposed an alternate account of the Knobe Effect. According to his “Normative Reason account of Intentional Action”, a side-effect counts as intentional only when the agent thought it constituted a normative reason not to act but did not care. In this paper, I put Hindriks’ account to test through two new studies, the results of which suggest that Hindriks’ account should be rejected. However, I argue that the key conceptual insight behind Hindriks’ account can still be saved and integrated in future accounts of Knobe’s results.     

同胞共情：特点、影响因素及理论机制

同胞之间的交流和互动更能促进彼此共情的发展。随着“全面二孩”政策的实行,同胞共情成为国内外研究者共同关注的焦点。本文在同胞的视角下总结了同胞共情的共性特点和特异性特点,从个体、同胞、家庭三个维度阐述了同胞共情的影响因素。未来研究需要进一步注重文化,回归本土研究;加强双向机制研究,夯实理论框架;重视干预性研究,探索提升同胞共情的方法。     

Perceived academic challenges of Jewish and Arab undergraduates during the first wave of COVID-19

This study examined differences between Arab and Jewish undergraduate students in their perceived academic challenges, COVID-19-related concerns, perceived social support and trust in the university and the government. It also examined factors associated with perceived academic challenges and the moderating role of trust in the university in the associations between COVID-19-related concerns and perceived academic challenges. The sample consisted of 2751 students: 2291 (83%) Jewish, 398 (15%) Arab and 61 (2%) ‘other’. Arab students reported higher COVID-19-related concerns and perceived academic challenges, and lower levels of perceived social support and trust in university and government than did Jewish students. Both Jewish and Arab students identified COVID-19-related concerns as a stress-vulnerability factor for perceived academic challenges, whereas perceived social support and trust in the university were identified as resources for perceived academic challenges. No support was found for the role of trust in government in the face of perceived academic challenges nor for the moderating role of trust in the university in the associations between COVID-19-related concerns and perceived academic challenges. In conclusion, the need of Arab students for emotional and academic support needs to be acknowledged as part of the efforts to promote academic success during the pandemic.     

Characteristics of changes of personal odor after experimental bone marrow transplantation]

In an operant conditioning paradigm 4 Balb/c inbred strain mice were conditioned to discriminate between urine samples of two other inbred strains. The purpose was to examine whether or not the known stimulus configuration during training had any effect upon the rate of recognition of other stimuli. On the basis of this procedure, we subsequently investigated the extent to which an allogeneic bone marrow transplantation interferes with the olfactory identity of an individual. For the transplants a strain was inbred which had no contact to the animals tested, a procedure used for the first time here. Furthermore, also for the first time, it was possible to demonstrate in a direct comparison, the role played by donor versus recipient characteristics on the olfactory composition of the recipients odor.     

远程心理健康服务：应用、优势及挑战

远程心理服务(Telepsychology)是利用远程通讯技术提供心理服务的新兴心理服务方式,虽然在COVID-19疫情期间得到了广泛应用,但仍缺乏相关行业应用规范及专业培训体系。现有的远程心理服务三维模型以应用环境、应用领域、应用方式为服务框架,结合九个应用领域开展远程心理服务。我们根据已有研究提出了以咨询师、治疗方法、远程技术手段为主要因素、以来访者为中心的远程心理服务应用模型。人工智能在远程心理服务领域的应用主要包括三个方面:机器学习与人工神经网络、自然语言处理与情感分析、虚拟现实与增强现实。目前,远程心理服务正以蓬勃的态势极速发展:其在提高心理服务督导效率、减少服务成本等方面有着显著优势,同时在心理服务从业人员对远程心理服务的接受度、来访者的适应性、重视程度方面也面临着挑战。未来远程心理服务可以在监管体系、从业者培训、远程应用技术三个方面进行深入探索。     

The association between dispositional self-control and longitudinal changes in eating behaviors,diet quality,and BMI

In a random sample from the general population (N = 2781, 46% males), a longitudinal survey was conducted. The association between dispositional self-control and changes in eating behaviours and diet quality was analysed between the first wave (2010) and the last wave (2014). Results show that the higher the dispositional self-control, the lower the increase in overeating behaviours (emotional eating, external eating, ambivalence towards palatable food and overeating), and BMI and the larger the improvement in healthy diet over time. Self-control was not associated with changes in dietary restraint. This is one of the first studies suggesting that dispositional self-control is associated with changes in eating behaviours and healthy food intake over time.