Are objects required for object-files? Roles of segmentation and spatiotemporal continuity in computing object persistence

Two central tasks of visual processing are (1) to segment undifferentiated retinal images into discrete objects, and (2) to represent those objects as the same persisting individuals over time and motion. Here we explore the interaction of these two types of processing in the context of object files—mid-level visual representations that “stick” to moving objects on the basis of spatiotemporal properties. Object files can be revealed by object-specific preview benefits (OSPBs), wherein a “preview” of information on a moving object speeds the recognition of that information at a later point when it appears again on the same object (compared to when it reappears on a different moving object), beyond display-wide priming. Here we explore the degree of segmentation required to establish object files in the first place. Surprisingly, we find that no explicit segmentation is required until after the previews disappear, when using purely motion-defined objects (consisting of random elements on a random background). Moreover, OSPBs are observed in such displays even after moderate (but not long) delays between the offset of the preview information and the onset of the motion. These effects indicate that object files can be established without initial static segmentation cues, so long as there is spatiotemporal continuity between the previews and the eventual appearance of the objects. We also find that top-down strategies can sometimes mimic OSPBs, but that these strategies can be eliminated by novel manipulations. We discuss how these results alter our understanding of the nature of object files, and also why researchers must take care to distinguish “true OSPBs” from “illusory OSPBs”.     

Accounts of workplace bullying: The role of the organization

In over a decade of research into bullying at work, the focus has been on defining, measuring, and explaining the essential nature of the bullying phenomenon. This focus has positioned the individual as the main unit of analysis, with the organization acting as a facilitating backdrop. By assuming a critical research position as opposed to the dominant positivist tradition from which most of the bullying research emanates, attention can be drawn to additional and marginalized accounts. Our research does not offer a definition of bullying—rather, we examine the implications of the different ways in which the term bullying is used. This paper uses data from a case study in a large telecommunications company's call centres. We demonstrate that while employees use the pathologized individual and the facilitating environment to account for bullying, in addition they use the notion of the pathologized organization. This additional narrative brings issues of power and politics in organizations to the fore. Taking a critical management approach, we focus on employee accounts of the oppressive impact of power structures. We argue that marginalizing certain accounts functions to maintain the organizational power balance. By using the term bullying to describe their work experience, employees in this study sought to employ an emotive and highly charged term to highlight their discontent at increasingly difficult work situations.     

Perception of Maximum Reaching Height When the Means of Reaching Are No Longer in View

Previous research has shown that perception of maximum reaching height is relative to reaching ability even when the means of performing this behavior would bring about (future) changes in reaching ability. Two experiments investigate whether this continues to be the case even when the means of reaching are no longer in view. The results show perception of maximum reaching height reflects impending changes to reaching ability both when the means of performing the reaching task (and changing reaching ability) are present and when they are no longer in view. The results are discussed in the context of prospectivity, retrospectivity, and flexibility—3 fundamental hallmarks of goal-directed behavior.     

Transhumanism and Roman Catholicism: Imagined and Real Tensions

Abstract

Transhumanists have asserted that religious people would both oppose life extension and allowing people with extended lives to die. In this paper, coming from a Roman Catholic perspective, I refute four myths associated with these claims: that the Church materially opposes life extension, that it conceptually opposes the very idea of life extension, that it opposes human genetic manipulation, and that it opposes letting people die in hospitals. I then propose that there are four real tensions that are much more significant: that material immortality is highly improbable, that injustice and inequality are major concerns, that transhuman omnipotence is impossible, and that utopianism is extremely dangerous.     

Religion,Prejudice, and Authoritarianism: Is RWA a Boon or Bane to the Psychology of Religion?

In research on religiosity and prejudice, right‐wing authoritarianism (RWA) has been studied alongside variables such as fundamentalism and orthodoxy. Four concerns regarding research on the relationship between RWA and religiosity are identified: (1) the overlap of religiosity and prejudice within the RWA scale; (2) the inflation of relationships by correlating part‐whole measures; (3) covariation in the extremes of the construct hiding the possible independence of components within RWA; and (4) statistical artifacts arising in multiple regression from the combination of these factors. We elaborate these four issues and then demonstrate how they can lead to different interpretations of some previously published data. The article concludes with suggestions for the management and resolution of these issues that may allow RWA to continue to be used in religiosity and prejudice research and how it might evolve to become the boon to researchers that they seek.     

Contextual Influences on Participation in Community Organizing: A Multilevel Longitudinal Study

This article reports results from a study of contextual influences on participation among people involved in congregation-based community organizing. Data are drawn from 11,538 individual participants in 115 congregations taking part in one of five local organizing initiatives in different cities over a five-year period. Analyses used 3-level longitudinal models with binary indicators of participation/non-participation in group meetings each successive year as the criterion. Time-varying predictors at level-1 included prior participation in group meetings as a control, the types of group meetings that participants attended, the number of face-to-face meetings held between each participant and organizing staff of the local organizing initiatives, and a measure of the involvement of participants' affiliation networks. At level-2, demographic information was collected for a subset of participants (N = 461) and was included in a separate model. Neighborhood compositional characteristics were examined at level-3, including median income, economic heterogeneity, and residential stability. Study results found that characteristics of organizational settings (i.e., types of group meetings attended and frequency of face-to-face contact) predicted future participation in group meetings but that individual and neighborhood-level demographic characteristics were generally not predictive of future participation in community organizing activities.     

Evaluation of fixed momentary dro schedules under signaled and unsignaled arrangements

Fixed momentary schedules of differential reinforcement of other behavior (FM DRO) generally have been ineffective as treatment for problem behavior. Because most early research on FM DRO included presentation of a signal at the end of the DRO interval, it is unclear whether the limited effects of FM DRO were due to (a) the momentary response requirement of the schedule per se or (b) discrimination of the contingency made more salient by the signal. To separate these two potential influences, we compared the effects of signaled versus unsignaled FM DRO with 4 individuals with developmental disabilities whose problem behavior was maintained by social-positive reinforcement. During signaled FM DRO, the experimenter presented a visual stimulus 3 s prior to the end of the DRO interval and delivered reinforcement contingent on the absence of problem behavior at the second the interval elapsed. Unsignaled DRO was identical except that interval termination was not signaled. Results indicated that signaled FM DRO was effective in decreasing 2 subjects' problem behavior, whereas an unsignaled schedule was required for the remaining 2 subjects. These results suggest that the response requirement per se of FM DRO may not be problematic if it is not easily discriminated.