Relative versus absolute stimulus control in the temporal bisection task

When subjects learn to associate two sample durations with two comparison keys, do they learn to associate the keys with the short and long samples (relational hypothesis), or with the specific sample durations (absolute hypothesis)? We exposed 16 pigeons to an ABA design in which phases A and B corresponded to tasks using samples of 1 s and 4 s, or 4 s and 16 s. Across phases, we varied the mapping between the samples and the keys. For group Relative, short and long samples were always associated with the same keys (e.g., Phase A: ‘1s→ Left, 4s→ Right''; Phase B: ‘4s→ Left, 16s→ Right''); for group Absolute, the 4-s sample was associated always with the same key (e.g., Phase A: ‘1s→ Left, 4s→ Right''; Phase B: ‘16s→ Left, 4s→ Right’). If temporal control is relational, group Relative should learn the new task faster than group Absolute, but if temporal control is absolute, the opposite should occur. We compared the results with the predictions of the Learning-to-Time (LeT) model, which accounts for temporal discrimination in terms of absolute stimulus control and stimulus generalization. The acquisition curves of the two groups were generally consistent with LeT and therefore more consistent with the absolute than the relative hypothesis.     

Alternative approaches for thinking about and modeling consumer decisions in relationships

Simpson, Griskevicius, and Rothman identify an understudied area in consumer research (namely, decision making in social relationships), propose an important starting point for enquiry (a dyadic framework), and suggest many fruitful moderators for study that can be incorporated in their framework. After pointing out some boundary conditions and opportunities for future research concerning their suggestions, I consider a recent approach in psychology that applies to a relatively circumscribed domain of social relationships (i.e., the social relations model) and then briefly review an emerging approach (plural subject theory applied to goal-directed behavior) that goes beyond the social relations model and better fits certain psychological and social psychological phenomena in consumer behavior.     

应用心理学的学科性质——基于钱学森学科结构模型的分析

纯粹应用观和独立观是解释应用心理学学科性质的两个代表性理论。前者认为应用心理学仅是基础心理学知识和方法的直接应用;后者则认为应用心理学有独立的本质特征。钱学森学科结构模型赞同独立观,认为应用心理学有三个本质特征：1）研究旨趣面向心理工程技术中的重大问题,生产应用性理论;2）内容体系由社会需求决定,随着需求的变化而变化;3）研究方法的个人经验成分多于基础心理学,少于心理工程技术。在应用心理学建设中,1）要敏于实际需求;2）要大力发展、创立我国需要的应用心理学分支;3）要统一人才培养规制。     

社会自我效能感的结构、测量及其作用机制

班杜拉的自我效能理论一直是当代心理学的热点话题。作为社交情境中的特殊自我效能感,社会自我效能感是能够影响个人人际互动质量的重要心理因素之一,因此也逐渐开始受到研究者的关注。通过对国内外理论文章与实证研究的分析发现,社会自我效能感与社交自尊、社交果敢性、社交信心等相关概念有所不同,是指个体对自己社交能力的主观信念;其内涵在不同文化自我或情境的视角下可能存在差异,具有多元结构的可能性。社会自我效能感与个人特质、情绪、态度及行为等变量相关,并能够显著预测抑郁、社交焦虑、生活满意度、社会适应等变量。此外,社会自我效能感也在外向、性别角色、依恋、目标定向、网络人际交往的影响机制中起到中介作用,且能够对压力和不公平感所造成的消极影响具有一定的缓冲作用。然而有关研究仍存在诸多问题与不足,未来研究应该关注社会自我效能感内涵与结构的确定、测量工具的开发,并加强对其影响因素与影响效应的探索、系统模型的构建和跨文化研究的扩展。     

Characterization of lower-limbs inter-segment coordination during the take-off extension in ski jumping

Take-off, the most important phase in ski jumping, has been primarily studied in terms of spatio-temporal parameters; little is known about its motor control aspects. This study aims to assess the inter-segment coordination of the shank-thigh and thigh-sacrum pairs using the continuous relative phase (CRP). In total 87 jumps were recorded from 33 athletes with an inertial sensor-based system. The CRP curves indicated that the thighs lead the shanks during the first part of take-off extension and that the shanks rotated faster at the take-off extension end. The thighs and sacrum first rotated synchronously, with the sacrum then taking lead, with finally the thighs rotating faster. Five characteristic features were extracted from the CRP and their relationship with jump length was tested. Three features of the shank-thigh pair and one of the thigh-sacrum pair reported a significant association with jump length. It was observed that athletes who achieved longer jumps had their thighs leading their shanks during a longer time, with these athletes also having a more symmetric movement between thighs and sacrum. This study shows that inter-segment coordination during the take-off extension is related to performance and further studies are necessary to contrast its importance with other ski jumping aspects.     

Elite athletes and retirement: Identity,choice, and agency

Retirement from elite sport can be highly distressing for athletes, and many report experiencing depression and anxiety in adjusting to this transition. In this article, a discursive psychological approach is employed to explore constructions of choice and identity around elite athletes’ retirements within Australian newsprint media. Within these accounts, three ‘types’ of retirements were identified: retirements occurring in relation to age, injury, or active choice. Retiring with individual agency and at an appropriate time was repeatedly privileged, whereas retiring in different ways was routinely problematised. In privileging particular ways of retiring, certain identity positions were made more accessible than others. Consequently, certain actions and choices are deemed appropriate (or not) for athletes, ultimately constraining decision‐making around retirement. The implications of such limited identity positions and choices are explored in relation to the psychological distress and clinical concerns that emerge among many athletes in the transition out of elite sport.     

转化医学体系下的学科服务模式探讨

转化医学的出现极大地推动了医学研究模式的变革,同时转化医学模式对服务于医学研究的图书馆也带来了机遇和挑战,通过对转化医学实现路径的分析,发掘出转化医学研究的实际需求,结合目前学科馆员服务面临的困境,从中寻找出适应转化医学模式的学科服务模式,从而为开展进一步的工作打下良好的基础.     

An analysis of reinforcement history effects

Four pigeons were exposed to two tandem variable-interval differential-reinforcement-of-low-rate schedules under different stimulus conditions. The values of the tandem schedules were adjusted so that reinforcement rates in one stimulus condition were higher than those in the other, even though response rates in the two conditions were nearly identical. Following this, a fixed-interval schedule of either shorter or longer values than, or equal to the baseline schedule, was introduced in the two stimulus conditions respectively. Response rates during those fixed-interval schedules typically were higher in the presence of the stimuli previously correlated with the lower reinforcement rates than were those in the presence of the stimuli previously correlated with the higher reinforcement rates. Such effects of the reinforcement history were most prominent when the value of the fixed-interval schedule was shorter. The results are consistent with both incentive contrast and response strength conceptualizations of related effects. They also suggest methods for disentangling the effects of reinforcement rate on subsequent responding, from the response rate with which it is confounded in many conventional schedules of reinforcement.     

The Inducement of Meaningful Work: A Response to Anderson and Weijer

James A. Anderson and Charles Weijer take the wage payment model proposed by Neil Dickert and Christine Grady and extend the analogy of research participation to unskilled wage labor to include just working conditions. Although noble in its intentions, this moral extension generates unsavory outcomes. Most notably, Anderson and Weijer distinguish between two types of research subjects: occasional and professional. The latter, in this case, receives benefits beyond the moral minima in the form of “the right to meaningful work.” The problem is that meaningful work can itself be a form of inducement, and consequently, may in fact increase the incidence of inducement contrary to the intentions of the wage payment model.