Digital embryos: a novel technical approach to investigate perceptual categorization in pigeons (Columba livia) using machine learning

Animal Cognition - Pigeons are classic model animals to study perceptual category learning. To achieve a deeper understanding of the cognitive mechanisms of categorization, a careful consideration...     

Accidents happen: Psychological empowerment as a moderator of accident involvement and its outcomes

Research in the occupational safety realm has tended to develop and test models aimed at predicting accident involvement in the workplace, with studies treating accident involvement as the starting point and examining its outcomes being more rare. In this study, we examine the relationship between accident involvement and a series of outcomes drawing upon a learned helplessness theory perspective. Specifically, we predicted that psychological empowerment would moderate the relationship between prior accident involvement and outcomes. We tested our hypotheses on a sample of 392 employees and their 66 supervisors working in an iron and steel manufacturing firm in Southern Turkey, using data collected from employees and their supervisors via four separate surveys. Results suggest that accident involvement was positively related to supervisor‐rated employee withdrawal, production deviance, and sabotage only when psychological empowerment was low. The results illustrate that workplace accidents have indirect costs in the form of higher withdrawal and maladaptive behaviors, and organizations may inoculate employees against some of these outcomes via higher psychological empowerment.     

Direct and indirect effects of third-party relationships on interpersonal trust

Past studies of the determinants of interpersonal trust have focused primarily on how trust forms in isolated dyads. Yet within organizations, trust typically develops between individuals who are embedded in a complex web of existing and potential relationships. In this article, the authors identify 3 alternative ways in which a trustor and trustee may be linked to each other via third parties: network closure (linked via social interactions with third parties), trust transferability (linked via trusted third parties), and structural equivalence (linked via the similarity of their relationships with all potential third parties within the organization). Each of these is argued to influence interpersonal trust via a distinct social mechanism. The authors hypothesized that network closure and structural equivalence would predict interpersonal trust indirectly via their impact on interpersonal organizational citizenship behaviors performed within the interpersonal relationship, whereas trust transferability would predict trust directly. Social network analyses of data gathered from a medium-sized work organization provide substantial support for the hypotheses and also suggest important directions for future research.     

The relation between children's conceptual functioning with color and color term acquisition

Young children experience considerable difficulty in learning their first few color terms. One explanation for this difficulty is that initially they lack a conceptual representation of color sufficiently abstract to support word meaning. This hypothesis, that prior to learning color terms children do not represent color as an abstraction, was tested in two experiments using samples of 25- to 39-month-olds and 20- to 32-month-olds. Children's ability to conceptually represent color and their knowledge of color terms were assessed, and a strong association was found between the ability to make inferences based on color and the comprehension of color words. Children who did not comprehend color terms were unsuccessful at a conceptual task that required them to represent color as a property independent of the particular objects that displayed it. The results suggest that the initial absence of an abstract representation of color contributes to the difficulty that young children encounter when first learning color words.     

Torture and judgments of guilt

Although torture can establish guilt through confession, how are judgments of guilt made when tortured suspects do not confess? We suggest that perceived guilt is based inappropriately upon how much pain suspects appear to suffer during torture. Two psychological theories provide competing predictions about the link between pain and perceived blame: cognitive dissonance, which links pain to blame, and moral typecasting, which links pain to innocence. We hypothesized that dissonance might characterize the relationship between torture and blame for those close to the torture, while moral typecasting might characterize this relationship for those more distant from it. Accordingly, this experiment placed participants into one of two different roles in which people may be exposed to torture. Participants in the proximal role of prison staffer saw suffering torture victims as relatively more guilty, while participants in the relatively distant role of a radio listener saw suffering victims as more innocent.     

The Conflict Between Aristotelian and Galileian Modes of Thought in Contemporary Psychology

Kraepelin combined the constant method and the method of limits to avoid the inconvenience of the former and the response bias of the latter. The use of this approach together with Guttman scaling provides a method that requires few observations, is easy to administer and score, and can be applied to a variety of measurement situations. Examples are given of its use for point of subjective equality, aesthetic preference, and thresholds.