Effects of belief and logic on syllogistic reasoning: Eye-movement evidence for selective processing models

Studies of syllogistic reasoning have demonstrated a nonlogical tendency for people to endorse more believable conclusions than unbelievable ones. This belief bias effect is more dominant on invalid syllogisms than valid ones, giving rise to a logic by belief interaction. We report an experiment in which participants' eye movements were recorded in order to provide insights into the nature and time course of the reasoning processes associated with manipulations of conclusion validity and believability. Our main dependent measure was people's inspection times for syllogistic premises, and we tested predictions deriving from three contemporary mental-models accounts of the logic by belief interaction. Results supported recent "selective processing" theories of belief bias (e.g., Evans, 2000; Klauer, Musch, & Naumer, 2000), which assume that the believability of a conclusion biases model construction processes, rather than biasing the search for falsifying models (e.g., Oakhill & Johnson-Laird, 1985) or a response stage of reasoning arising from subjective uncertainty (e.g., Quayle & Ball, 2000). We conclude by suggesting that the eye-movement analyses in reasoning research may provide a useful adjunct to other process-tracing techniques such as verbal protocol analysis.     

Disability as diversity in Fortune 100 companies

To investigate the inclusion of people with disabilities in the diversity policies of the most successful businesses in the United States, we examined the publicly available workforce and supplier diversity policies of the top 100 companies on Fortune Magazine's 2003 list of the 500 most profitable companies in the nation. The majority of these companies have extensive information about their diversity policies and practices available on their corporate website. The information was used to categorize the policies into those that include people with disabilities, do not define diversity, and enumerate what is meant by diversity (e.g. in terms of race or gender) but do not expressly mention disability. In addition, we looked beyond the diversity policies to information available on corporate websites relating to a variety of diversity initiatives. Findings suggest that the majority of the companies that top the Fortune 500 list have developed and implemented diversity policies. Of these, 42% have diversity policies that include people with disabilities in the definition of a diverse workforce. Furthermore, 47% of companies with workplace diversity policies discuss diversity in a way that neither expressly includes nor excludes people with disabilities. Far fewer (15%) supplier diversity policies include disability in the definition of diversity, but a significant number of companies use criteria that allow a business owner with a disability to benefit from the company's supplier diversity program.     

The utility of the rorschach coping deficit index as a measure of depression and social skills deficits in children and adolescents

Little research has evaluated the validity of the Coping Deficit Index (CDI) of the Rorschach Comprehensive System (CS). Because the CS Depression Index (DEPI) has frequently been found to yield false negatives, the CDI has been proposed as an alternative means of assessing social coping skills that may relate to depression. This study examined potential correlates of the CDI using the Personality Inventory for Children-Second Edition (PIC-2). Sixty-five children and adolescents were assessed with the Rorschach CS and the PIC-2. None of the PIC-2 clinical scales or subscales measuring withdrawal or social skills predicted a positive CDI, and none of the depression-related PIC-2 scales predicted a positive CDI or DEPI. The only significant relationship found was a negative relationship between the CDI and a PIC-2 subscale measuring sleep problems and preoccupation with death. Implications of these findings for clinicians and further research are discussed.     

Relations between maternal network size and maternal behaviour with five-year-olds across levels of maternal background and child ability

The article examines the relations between mothers' reports of the size of their social support networks and observations of their behaviour with their 5-year-old children in a sample of 281 children entering kindergarten. Results indicate that maternal network size was correlated with mothers' competence in interaction with their children, even after controlling for variance in maternal education and child cognitive ability. Further analyses, when the sample was divided according to demographic or child risk, indicated that the relation between network size and maternal competence interaction was higher in the high-risk groups than in the low-risk groups. The results extend the literature on social support to large, normal samples of school-age children and are discussed in terms of ecological models of development.     

An error recognition test as a measure of linguistic competence: An example from Welsh

The use of sentence imitation tasks to measure the development of linguistic competence in children is discussed, and the drawbacks of such techniques noted, particularly in the case of adult subjects. A measurement based on results from an error recognition test is proposed. A set of variables from Welsh is described, together with an error recognition test designed around them. The results of the test seem to indicate that linguistic features that may superficially seem equally variable may have different statuses in the competence of speakers. This sort of test is felt to have a part to play in the measurement of linguistic competence.     

Predictors of posttraumatic stress in children following injury: The influence of appraisals, heart rate, and morphine use

Prospective studies of posttraumatic stress disorder (PTSD) in children that investigate simultaneously both cognitive and biological or psychophysiological predictors are rare. The present research reports on the impact of cognitive factors (trauma-related appraisals) and biological indicators (heart rate, morphine use) in predicting PTSD and depression symptoms following single-incident trauma. Children and adolescents (N = 48) were assessed within 4 weeks of an injury that led to hospital treatment and followed up 6-months later. While morphine did not predict initial PTSD severity, it was associated with lower levels of PTSD at follow-up. Reductions in PTSD symptoms (change scores) between assessments were similarly associated with morphine dosage. Trauma-related appraisals also contributed to PTSD and depression symptom severity. While slightly different patterns of results were obtained depending on whether static or change scores were examined, as a whole the study adds to a growing literature that morphine has the potential to reduce PTSD symptoms severity. Likewise the relationship between unhelpful trauma appraisals and posttrauma psychopathology was replicated.     

Indexicality,Transparency, and Mental Files

Abstract

Francois Recanati’s Mental Files (Oxford: Oxford University Press, 2012) presents a picture of the mind on which mental representations are indexical and transparent. I dispute this picture: there is no clear case for regarding mental representations as indexical, and there are counterexamples to transparency.     

Nanoscale Science and Technology and People with Disabilities in Asia: An Ability Expectation Analysis

Science and technology, including nanoscale science and technology, influences and is influenced by various discourses and areas of action. Ableism is one concept and ability expectation is one dynamic that impacts the direction, vision, and application of nanoscale science and technology and vice versa. At the same time, policy documents that involve or relate to disabled people exhibit ability expectations of disabled people. The authors present ability expectations exhibited within two science and technology direction documents from Asia, as well as in two policy documents generated and influenced by disabled people from Asia. As well, the authors discuss the impact of the ability expectations exhibited in these four documents with respect to the relationship between science and technology and disabled people.