Recent advances in operant conditioning technology: a versatile and affordable computerized touchscreen system.

We report the construction of a new operant chamber that incorporates modern computer, touchscreen, and display technologies. An LCD display was housed in the front wall of a lightweight Plexiglas chamber. An Apple eMac computer was used to present visual stimuli on the monitor and to control other chamber events. Responses to the stimuli were recorded using a transparent resistive-type touchscreen that overlaid the monitor. The resulting system is simple and inexpensive to construct but powerful and flexible enough to explore a broad range of issues in animal learning and behavior.     

When increased confidence yields increased thought: A confidence-matching hypothesis

Traditional theories of confidence and information processing suggest that people engage in greater processing activity when they feel doubtful as opposed to confident. Recent research, however, has hinted at the possibility that this effect might be malleable. The current research tests a confidence-matching hypothesis to determine when increased confidence yields increased processing and when increased confidence yields decreased processing. Based on recent advances in research on matching effects, it is proposed that the classic negative effect of confidence on information processing will reverse when messages are framed in terms of confidence. This hypothesis is tested by presenting participants with a persuasive message containing strong or weak arguments under confidence or doubt conditions. As predicted, when the message is framed in confidence terms, participants engage in greater message processing when they feel confident rather than doubtful, as indicated by greater argument quality effects on attitudes and thought favorability.     

Expressed emotion in families of children and adults with intellectual disabilities

Expressed emotion (EE) is a measure of the affective relationship between two people characterized by criticism, hostility, and emotionally over-involved attitudes. Outside of the field of intellectual disabilities, there has been considerable interest in EE as an environmental marker that explains variance in the severity and/or course of a number of psychiatric disorders. Researchers have also studied EE in parents and found strong associations with children's behavior problems. In this review, we focus on the data from 11 published studies of EE in families of children and adults with intellectual disabilities. We conclude that there is evidence for the presence of high EE in some families, and that this alone should concern researchers and clinicians and set an agenda for considerable future research effort. We also note a lack of attention to the measurement of EE in intellectual disability. In terms of the existing evidence base, we suggest that there is support for the hypothesis that behavior problems in children and adults with intellectual disabilities may be related to high EE in parents, and a small amount of data predicting over time support the putative causal effect of high EE on maintaining or exacerbating behavior problems. Given that EE is perhaps best conceptualized as the result of an interaction between caregivers and those cared for, there is a need to explore interventions that may help to remediate high EE within families. It is also important to understand from this position that EE may be a normative part of the experience of caring for someone under very stressful circumstances and not something for which families are blamed. Other future research priorities and some implications for practice are also discussed.     

Opposition from Christians to Myers–Briggs personality typing: an analysis and evaluation

Myers–Briggs personality typing is widely used in the Christian church as an aid to individual self‐understanding and spiritual formation. However, some Christian leaders have expressed doubt about its validity in understanding human personality and also opposition to its use in nurturing spiritual growth. The aim of the work reported was to identify and examine the reasons for this negative stance towards personality typing. It was achieved by content analysis of published writings and, in a few cases, by correspondence with persons known to have a critical stance. The analysis showed five principal areas of concern: misuse of personality typing in spiritual formation; personality typing as a simplistic analysis; personality typing as a restrictive pigeon‐holing; unethical use of personality typing; and the Jungian derivation of personality type theory. Evaluation of this unease reveals significant semantic and epistemological issues and also a concern that personality typing, while not denying the tenets of Christian belief, could rival them for primacy in the hearts and minds of Christians.     

The Relevant Equivalence Property

The pure implicational and the multiplicative fragments of arange of propositional relevant (and other) logics are shownto have the property that any two formulas equivalent in sucha logic are constructed from exactly the same propositionalvariables – as opposed to merely having (as the definitionof relevance itself would require) some propositional variablein common.     

Attitude Certainty: A Review of Past Findings and Emerging Perspectives

Attitude certainty, or the sense of conviction with which one holds one's attitude, has been the subject of considerable research attention. This article provides an overview of past, present, and future research on this topic. First, we review past work on attitude certainty, focusing on what has been learned about the antecedents and consequences of feeling certain or uncertain of one's attitude. Following this review, we examine emerging perspectives on attitude certainty. In particular, we describe recent work exploring the metacognitive appraisals that shape attitude certainty, the different meanings attitude certainty can have, and the dynamic effects of attitude certainty on attitude strength. Along the way, we also highlight important questions that have yet be answered about the certainty construct.