Data archiving in animal experimentation: merits, challenges, and a case study.

Electronic data archives may supplement the traditional peer-reviewed journal article. The merits of data archiving include public service, a more complete research project, overcoming barriers to limited-access research resources, and increasing the impact of a scientific project. A case study of chimpanzee timing performance in space is derived from the NASA Life Sciences Data Archive (http://lsdajsc. nasagov). An analysis of the archived data suggests that the scalar property (a form of Weber's law) applies to timed performance of a chimpanzee in orbit of the earth. Challenges associated with data archives are discussed. Although significant challenges are associated with archiving electronic data, these difficulties are outweighed by its merits.     

Organizational Concern,Prosocial Values,or Impression Management? How Supervisors Attribute Motives to Organizational Citizenship Behavior

Although prior studies have indicated that organizational citizenship behaviors (OCBs) tend to be positively related to supervisory ratings of employee performance, only a few studies have investigated how the motives attributed to OCB (e.g., impression management, prosocial motives, organizational concern) might influence such evaluations. Based on Weiner's (1995 ) attribution model and a study of supervisors in varied industries, we found that attributions regarding employees' motives for engaging in OCB are related to supervisors' emotional reactions to such behavior, which are, in turn, related to ratings of employee performance. Implications of the study for management research and practice are discussed.     

Face recognition algorithms and the other‐race effect: computational mechanisms for a developmental contact hypothesis

People recognize faces of their own race more accurately than faces of other races. The “contact” hypothesis suggests that this “other‐race effect” occurs as a result of the greater experience we have with own‐ versus other‐race faces. The computational mechanisms that may underlie different versions of the contact hypothesis were explored in this study. We replicated the other‐race effect with human participants and evaluated four classes of computational face recognition algorithms for the presence of an other‐race effect. Consistent with the predictions of a developmental contact hypothesis, “experience‐based models” demonstrated an other‐race effect only when the representational system was developed through experience that warped the perceptual space in a way that was sensitive to the overall structure of the model's experience with faces of different races. When the model's representation relied on a feature set optimized to encode the information in the learned faces, experience‐based algorithms recognized minority‐race faces more accurately than majority‐race faces. The results suggest a developmental learning process that warps the perceptual space to enhance the encoding of distinctions relevant for own‐race faces. This feature space limits the quality of face representations for other‐race faces.