Knowledge of natural kinds in semantic dementia and Alzheimer's disease

We examined the semantic impairment for natural kinds in patients with probable Alzheimer's disease (AD) and semantic dementia (SD) using an inductive reasoning paradigm. To learn about the relationships between natural kind exemplars and how these are distinguished from manufactured artifacts, subjects judged the strength of arguments such as "Humans have a chemical called sebum. Therefore, frogs have a chemical called sebum." These judgments depend on subjects' perception of the similarity between the familiar objects named in the premise and the conclusion. Controls rated arguments generalizing from a natural kind to an artifact as significantly weaker than arguments generalizing from one natural kind to another natural kind. SD patients demonstrated a graded profile of generalization without evidence of a categorical distinction between natural kinds and artifacts. AD patients' judgments also suggested more difficulty than controls at distinguishing between natural kinds and artifacts. Both SD patients and AD patients resembled controls in their judgments of arguments where both objects are from the natural kinds category. Semantic knowledge thus appears to be sufficiently preserved in both AD and SD to support within-category similarity judgments. We suggest that SD patients may be impaired in part at identifying the features critical to diagnosing membership in a semantic category, while AD patients' performance is consistent with their semantic categorization deficit.     

Disregarding Preliminary Information When Rating Job Applicants' Performance: Mission Impossible?1

Firms allocate considerable resources to test job applicants' skills and to ensure that hiring decisions are nondiscriminatory. Interpreting selection output in light of preliminary information may undermine the impartiality of personnel selection decisions. In this study, human resource managers were presented preliminary information about a candidate's performance and asked to rate him according to a detailed assessment‐center report of his performance. We examined several interventions for reducing reliance on preliminary information: retrieving assessment‐center information, generating a rating model, or both. Participants (N = 167) excluded preliminary information from the interventions, but relied on it when rating the candidate. The documented failure to control for the effects of preliminary information on subsequent judgments can contribute to improved selection procedures.     

Two‐Step Testing in Employee Selection: Is score inflation a problem?

Unproctored Internet testing in employee selection has become increasingly popular over the past few years. However, there is a concern that cheating during unproctored administrations may influence the test results in terms of score inflation. The current research attempts to determine the extent of cheating on an unproctored Internet test of perceptual speed by analyzing data from a parallel version of the test administered in a proctored setting. Among a sample of 856 job applicants from nine European countries, there was no evidence that cheating occurred. In fact, evidence of an effect operating in the opposite direction was obtained. These results indicate that the use of unproctored Internet testing is appropriate for this type of test.     

Gender Role Ideology as a Moderator of the Relationship between Social Power Tactics and Marital Satisfaction

The study examined whether the Power Interaction Model is applicable for explaining the choice of power tactics in conflict situations among Israeli married couples. In addition, gender role ideology was tested as a moderator of the relationship between power usage and marital satisfaction. Seventy-eight couples reported on self usage and spouse’s usage of power tactic behaviors during conflicts and completed questionnaires assessing marital satisfaction, gender role ideology (traditional, liberal) and demographics. Findings indicated greater agreement within couples for harsh rather than for soft tactic preference. As expected, preference for harsh tactics was associated with lower marital satisfaction yet gender role ideology moderated this association. The role of conflict and power usage in traditional and liberal families was addressed.     

Dimensions in data: testing psychological models using state-trace analysis

Cognitive science is replete with fertile and forceful debates about the need for one or more underlying mental processes or systems to explain empirical observations. Such debates can be found in many areas, including learning, memory, categorization, reasoning and decision-making. Multiple-process models are often advanced on the basis of dissociations in data. We argue and illustrate that using dissociation logic to draw conclusions about the dimensionality of data is flawed. We propose that a more widespread adoption of 'state-trace analysis'--an approach that overcomes these flaws--could lead to a re-evaluation of the need for multiple-process models and to a re-appraisal of how these models should be formulated and tested.     

Feeling my way into story space: Lessons for research from storyteller Duncan Williamson

The paper reflects on the author's own life history and the important place that storytelling as a folk tradition and artistic practice play within it. Winicott's concept of potential space is used to explore the possibilities that open up within the space that listener and teller share in the joint creation of the storytelling experience. The construction of this space is an emotional project to which both listener and teller contribute. The article goes on to examine the relevance of this experience for how both spatiality and relationality are conceptualized within research. Working from an underlying premise that knowledge creation is dialogic, the author examines the roles a researcher can play as both listener and teller within research.