Hierarchical resurgence

In resurgence, conventionally a target response is trained and then extinguished while some alternative response is reinforced. In the most common procedure, when the latter is extinguished, the former resurges. The present experiments examined resurgence after two responses were trained sequentially and subsequently extinguished. In Experiments 1 and 2, keypecking to one key was trained and then extinguished as keypecking to a different key was trained then later extinguished. In both experiments, regardless of the spatial location of the different keys, the last‐trained response resurged before the first‐trained one. The results were replicated in Experiment 3 where reinforcement rate of the first‐trained response was four times that of the second‐trained response. The results in conjunction with earlier experiments suggest that resurgence occurs hierarchically, although whether more or less recently trained target responses resurge first or later may depend on both current and historical variables. The results also raise questions about the interpretation of responding on a control key that sometimes is included in resurgence experiments to isolate resurgence from extinction‐induced responding.     

儿童母亲拒绝与同伴拒绝的关系—— 一个有中介的调节模型

摘 要 选取393家长进行问卷调查,考察儿童的母亲拒绝、家庭环境纷杂度、问题行为和同伴拒绝之间的关系。结果发现：（1）在控制了性别、年级、家庭社会经济地位后,母亲拒绝对儿童的同伴拒绝有显著正向预测作用;（2）家庭环境纷杂度调节了母亲拒绝与同伴拒绝之间的关系;（3）儿童外化问题行为在家庭环境纷杂度对母亲拒绝和同伴拒绝关系的调节效应中起完全中介作用。     

Euclidean Hierarchy in Modal Logic

For a Euclidean space , let L _n denote the modal logic of chequered subsets of . For every n 1, we characterize L _n using the more familiar Kripke semantics, thus implying that each L _n is a tabular logic over the well-known modal system Grz of Grzegorczyk. We show that the logics L _n form a decreasing chain converging to the logic L of chequered subsets of . As a result, we obtain that L is also a logic over Grz, and that L has the finite model property. We conclude the paper by extending our results to the modal language enriched with the universal modality.     

Extinction effects during the assessment of multiple problem behaviors

Extinction effects were evaluated in a multiple baseline across behaviors design with 2 boys after just one of several target problem behaviors was observed during a functional analysis. Other target behaviors emerged as extinction was introduced sequentially across all problem behaviors. Results demonstrated an efficient strategy for simultaneously assessing multiple problem behaviors maintained by the same consequence.     

Differential ordering of objects and attributes

By reference to nominated attributes, a genus, being a population of objects of one specified kind, may be partitioned into species, being subpopulations of different kinds. A prototype is an object representative of its species within the genus. Using this framework, the paper describes how objects can be relatively differentiated with respect to attributes, and how attributes can be relatively differentiating with respect to objects. Methods and rationale for such differential ordering of objects and attributes are presented by example, formal development, and application.For a genus comprisingn species of object there is a subsetP ofn distinct prototypes. With respect tom nominated attributes, each object in has anm-element characterization. Together these determine ann ×m objects × attributes matrix, the rows of which are the characterizations of the prototypical objects. Over then species in , an associated relative frequency vector gives the distribution of objects (and of their characterizations). The matrix and vector associate the objects in with points in a metric space (P, ); and it is with respect to various sums of distances in this attribute space that one can differentially order objects and attributes.The definition of the distance function is generalized across kinds of difference, types of characterization, scale-types of measurement, Minkowskiindex 1, and any form of distribution of objects over species. Explanatory and taxonomic applications in psychology and other fields are discussed, with focus on classification, identification, recognition, and search. The Braille code and the identification of its characters provide illustration.An anticipation and some preliminary indications were given in Sutcliffe and Bristow (1966), Sutcliffe (1972, 1973), and Nowakowska (1975). Subsequently the ideas have been extended and their applications realized in a computer program which, in its development, has so far gone through many minor and three major revisions to its present form in Sutcliffe (1985). The foregoing provided the foundation for the empirical applications and for the presentation in this paper of the ideas in their general form. the research has been supported by funds from the University of Sydney Research Grant and from the Australian Research Grants Scheme. In the working out and exposition of the ideas I have very much benefited from constructive critical comment given by C. R. Latimer, J. B. Michell, G. Oliphant, and E. Seneta, and from the professional programming skills of Michael Wilson and David Shillito. I am grateful for the invitation and the facilities for writing extended during 1983 by Georges Noizet, Laboratoire de Psychologie Expérimentale, Université René Descartes, Paris V, and by Samuel Messick, Vice President for Research, E.T.S. Princeton, N.J. Finally, I acknowledge the improvements in presentation of this paper which have arisen from the editor's and reviewers' comments.     

Individual differences in spatial frequency processing in scene perception: the influence of autism-related traits

Previous research suggested that coarse (High Spatial Frequency or HSF) and fine (Low Spatial Frequency or LSF) spatial information are flexibly used at different stages of processing during scene recognition in daily life. We tried to replicate and extend these findings by presenting non-social real-life scenes either as a normal picture, solely defined by LSF or HSF information, or using hybrid images consisting of overlaid LSF and HSF scene information. These were used as (in)congruent prime stimuli, modulating the rapid detection of a normal target picture in a 2-Alternative Forced Choice (2-AFC) categorization task (manmade versus natural). Our results indicated that coarse spatial information was more effective with shorter prime presentation times and fine spatial information required a longer prime presentation to influence participant performance. Interestingly, higher scores on the Autism-Spectrum Quotient questionnaire modified the impact of HSF prime information on target identification and influenced performance when ambiguous hybrid prime information preceded the categorization task.     

Serving first for the benefit of others: preliminary evidence for a hierarchical conceptualization of servant leadership

In this paper, we examine servant leadership as a promising leadership style for today's dynamic sales environments. Conceptual and empirical literature points to servant leadership's strong potential in facilitating benefits to salespeople and the organization. Yet that same literature evidences a problematic lack of consensus regarding components that distinctly reflect servant leadership. Existing conceptualizations include dimensions like humility and providing direction, which clearly overlap with various other leadership styles. In this paper, we first consider unique distinctives of servant leadership. We then propose an extension of the augmentation hypothesis from the transactional and transformational leadership literature. Specifically, we posit that servant leadership distinctives are hierarchically built on transformational characteristics, which themselves are built on transactional characteristics. Using secondary data from a sample of professional salespeople, we apply Guttman scaling and show this hierarchical conceptualization to be empirically tenable. We demonstrate that sales leadership at higher levels on the hierarchy produces incremental gains in salesperson satisfaction, salesperson performance, organizational citizenship behaviors, and corporate social responsibility. We confirm our findings in a validation sample and demonstrate an additional relationship with customer-directed extra-role behaviors. Our results imply that sales organizations can reap enhanced multi-faceted benefits through higher levels of servant leadership.     

How controllable is occupational violence?

Occupational violence may be an issue in a number of workplaces, and be of two main sources—those sites where cash is handled, and sites with aggressive clients. Legal requirements make it mandatory for an employer to provide a safe workplace, but just how controllable is occupational violence? A risk management equation is developed to assist the manager to ascertain the level of risk for violence in the workplace.     

Child psychopathology and deviant family hierarchies

The association between child psychopathology and reversals in family hierarchies (where the child is seen as equal or higher in the hierarchy than the parental figures) were examined with the Madanes Family Hierarchy Test on a sample of 177 clinic-referred boys. Madanes' original findings of the association of substance use and deviant family hierarchy were replicated in this younger sample, (age 7 to 12). Boys diagnosed with Conduct Disorder reported significantly more deviant hierarchies while boys diagnosed with Overanxious Disorder reported significantly fewer deviant hierarchies. Follow-up results revealed some instability and lack of informant agreement, but the hierarchy measure was not confounded by age, race, SES, IQ, or parents' marital status.     

Why philosophers should offer ethics consultations

Considerable debate has occurred about the proper role of philosophers when offering ethics consultations. Some argue that only physicians or clinical experienced personnel should offer ethics consultations in the clinical setting. Others argue still further that philosophers are ill-equipped to offer such advice, since to do so rests on no social warrant, and violates the abstract and neutral nature of the discipline itself.I argue that philosophers not only can offer such consultations but ought to. To be a bystander when one's discipline does offer insights and methods of value discernment is pusillanimous. But this position requires a view of clinical medical ethics as one that arises out of the clinical practice of medicine, and not just from an application of general ethical principles to the practice of medicine. I conclude with some skills that trained philosophers can bring to the consultation service, and note that all consultations are in the form of recommendations that the patient, family, and physician are still free to accept or reject. Philosophers in the clinical setting do not make decisions.