How learning contexts facilitate strategy transfer

The present study assessed the role of context in the acquisition and transfer of a mathematical strategy. One hundred and six children were assigned to four conditions: direct strategy instruction, guided discovery, direct teaching plus discovery, or a control condition. The intervention consisted of fourteen sessions during which the number-family strategy, useful for addition and subtraction, was taught. Third grade students in the guided discovery condition performed better than those in the direct instruction condition on far transfer problems that measured deep conceptual understanding. Students who had total or partial exposure to guided discovery held stronger beliefs and adopted more positive goals about the importance of mathematical understanding and peer collaboration, attributed less importance to task extrinsic reasons for success, and reported greater use of deep processing strategies than students exposed to direct, explicit instructions. Finally, students in the discovery conditions were able to communicate more effectively during problem solving than students in the direct instructions condition.     

An investigation of the relationship between self-efficacy and the communication effectiveness of product manual formats

Product manuals have been virtually ignored in published research despite their relevance to consumer satisfaction and marketplace safety. This study examines self-efficacy (perceptions of capabilities related to operating a product) and how it influences the effectiveness of and is also influenced by three safety message formats commonly used in product manuals (i.e., 1. safety messages presented in list format at the front of the manual; 2; safety messages presented by semantic similarity interspersed throughout the manual—chunked format, and 3. safety messages presented in a combined format—both list and chunked). As anticipated, pre-exposure self-efficacy was a significant covariate which was found to be positively related to post-exposure self-efficacy and negatively related to information evaluation. Further, controlling for pre-exposure self-efficacy, post-exposure self-efficacy was significantly lower in the combined (list plus chunked) condition. Findings of this research have important implications for the practice of repeating safety warnings and future research in the consumer information domain.Authors are listed in alphabetical order. This study was supported by an Illinois State University Research Grant.     

RESOLUTION OF LEXICAL AMBIGUITY BY EMOTIONAL STATE

Abstract— The role of emotion in the resolution of lexical ambiguity was investigated. Happy and sad subjects listened to a list of words that included homophones that had happy and neutral meanings (eg., presents-presence ) and homophones that had sad and neutral meanings (eg., mourning-morning ). Words were presented every 3 s, and subjects wrote down the words, as they heard them (Meaning could be identified by spelling in all cases). An interaction between emotional state and homophone category was observed. Sad subjects were more likely to write down sad meanings than were happy subjects. Results are discussed with reference to the literatures on both emotion and lexical access.     

The effects of room management and small-group procedures on the behavior of older adults who have Alzheimer's disease

The effects of room management and small groups procedures on the behavior of five older adults with Alzheimer's Disease was experimentally evaluated by a multielement design with replications across five subjects. Engagement during both room management and small groups was higher than during no treatment baselines. The effects on affective and maladaptive behaviors were of small magnitude. Evidence of individual differences was found both with respect to absolute proportions of time spent in various behaviors and with respect to interactions between individual differences and experimental conditions.     

Procuring organs from a non-heart-beating cadaver: commentary on a case report

Procurement of organs from non-heart-beating cadaver donors raises concerns. Standards for optimal patient care during withdrawal of life-sustaining therapy are evolving and continue to be debated and studied. Consensus on specific procedures and methods has not been attained, however, and protocols for the procurement of organs from patients following the withdrawal of life-sustaining therapies may compromise the evolving standards and harm the patient and the attendant family. In addition, there is little evidence to suggest that such protocols will significantly increase the number of organs procured. "Non-heart-beating cadaver" protocols that do not give comprehensive attention to optimal patient/family care at the time of withdrawal of life-sustaining therapy ought not to be endorsed.     

Functional Aspects of Recollective Experience in Face Recognition

This article describes two experiments on awareness in recognition memory for novel faces. Two kinds of awareness, recollective experience and feelings of familiarity in the absence of recollective experience, were measured by "remember" and "know" responses. Experiment 1 showed that "remember" but not "know" responses were reduced by divided attention at study. Experiment 2 showed that massed versus spaced repetition of faces in the study list had the opposite effects on "remember" and "know" responses. Massed repetition increased "know" responses and reduced "remember" responses. Spaced repetition increased "remember" responses and reduced "know" responses. The results of both experiments replicate previous findings from the verbal domain in the domain of face recognition, and hence they increase the ecological validity of this experiential approach to memory and awareness and the generality of its database. These findings are discussed from a rehearsal perspective on factors influencing the two states of awareness and in relation to the alternative "process dissociation" procedure.     

Parenting stress in parents of children with attention-deficit hyperactivity disorder and parents of children with learning disabilities

Parenting a child with ADHD can challenge parenting resources and coping. Increasingly, researchers are examining the relationship between the behavior of the child with ADHD and family functioning. While studies have shown inceased parenting stress in parents of children with ADHD, these studies have compared children with ADHD to non-disabled children. This study compares reports of parenting stress among mothers of children with ADHD, mothers of children with learning disabilities and mothers of non-referred children. Results showed that parenting stress was highest for mothers of children with ADHD. Increased parenting stress was associated with child characteristics and, in particular, with externalizing behavior problems.     

On “knowing your partner”: Dangerous illusions in the age of AIDS?

We identified two characteristics of the impression formation process that may cause people to underestimate the riskiness of potential sexual partners. In Study 1, participants were quite confident that they could determine whether someone was lying to them about risk-related behavior when, in reality, they could not. Particularly troubling was a “truth bias” that resulted in relatively high rates of truth detection, but poor lie detection. In Study 2, increased familiarity with a target person (who actually was HIV+) caused participants to lower their estimates of the target's riskiness, despite the fact that we explicitly warned them that the target might be HIV+. We suggest that such processes may foster the illusion of knowing one's partner when one does not.