Multivariate genetic analysis of cognitive abilities in an adolescent twin sample

The sources of covariation among cognitive measures of Inspection Time, Choice Reaction Time, Delayed Response Speed and Accuracy, and IQ were examined in a classical twin design that included 245 monozygotic (MZ) and 298 dizygotic (DZ) twin pairs. Results indicated that a factor model comprising additive genetic and unique environmental effects was the most parsimonious. In this model, a general genetic cognitive factor emerged with factor loadings ranging from 0.28 to 0.64. Three other genetic factors explained the remaining genetic covariation between various speed and Delayed Response measures with IQ. However, a large proportion of the genetic variation in verbal (54%) and performance (25%) IQ was unrelated to these lower order cognitive measures. The independent genetic IQ variation may reflect information processes not captured by the elementary cognitive tasks, Inspection Time and Choice Reaction Time, nor our working memory task, Delayed Response. Unique environmental effects were mostly nonoverlapping, and partly represented test measurement error.

Reinforcing the glass ceiling: The consequences of hostile sexism for female managerial candidates

Previous research has established that benevolent sexism is related to the negative evaluation of women who violate specific norms for behavior. Research has yet to document the causal impact of hostile sexism on evaluations of individual targets. Correlational evidence and ambivalent sexism theory led us to predict that hostile sexism would be associated with negative evaluations of a female candidate for a masculine-typed occupational role. Participants completed the ASI (P. Glick & S. T. Fiske, 1996) and evaluated a curriculum vitae from either a male or female candidate. Higher hostile sexism was significantly associated with more negative evaluations of the female candidate and with lower recommendations that she be employed as a manager. Conversely, higher hostile sexism was significantly associated with higher recommendations that a male candidate should be employed as a manager. Benevolent sexism was unrelated to evaluations and recommendations in this context. The findings support the hypothesis that hostile, but not benevolent, sexism results in negativity toward individual women who pose a threat to men's status in the workplace.

Brother secret, sister silence: Sibling conspiracies against managerial integrity

I offer a new cartography of ethical resistance. I argue that there is an uncharted interaction between managerial secrecy and organizational silence, which may exponentially increase the incidence of corruption in ways not yet understood. Current methods used to raise levels of moral conduct in business and government practice appear blind to this powerful duo. Extensive literature reviews of secrecy and silence scholarships form the background for an early stage conceptual layout of the co-production of secrecy and silence.

'Please Mr Hay, what are my poss(abilities)?': Legitimation of ability through physical education practices

This paper provides two vignettes that draw on data from projects that interrogate how a student can be positioned by practices within physical education (PE) and directed by the PE teacher in relation to their valued or legitimated ability. Through the use of Pierre Bourdieu's conceptual tools of field, habitus and capital we investigate the complex legitimation processes that shape student poss(abilities) and that are situated in the space of the PE class. The first vignette is from the perspective of a student and draws on data from interviews, a journal, questionnaires and photos of her PE experiences in upper primary and lower secondary school. The second vignette focuses on teacher practices and his constitution of the field of a PE class highlighting the significance of teacher perspectives of 'ability' in informing assessment in senior secondary PE. Using these examples we discuss the symbolic violence that works against each student by positioning them as 'less able' or 'unable' despite their participation in a learning context. We argue that by not attending to the possible abilities of students that could have been recognized, developed and legitimated, and through the misuse of capital assignment by teachers, PE may well be counterproductive to students' ongoing engagement with the subject area and the espoused potential upon which such a subject area justifies itself.

A comparison of picture description abilities in individuals with vascular subcortical lesions and Huntington's Disease

The lexical-semantic and syntactic abilities of a group of individuals with chronic nonthalamic subcortical (NS) lesions following stroke (n = 6) were investigated using the Western Aphasia Battery (WAB) picture description task [Kertesz, A. (1982). The Western aphasia battery. New York: Grune and Stratton] and compared with those of a group of subjects with Huntington's Disease (HD) (n = 6) and a nonneurologically impaired control group (n = 6) matched for age, sex, and educational level. The performance of the NS and HD subjects did not differ significantly from the well controls on measures of lexical-semantic abilities. NS and HD subjects provided as much information about the target picture as control subjects, but produced fewer action information units. Analysis of syntactic abilities revealed that the HD subjects produced significantly more grammatical errors than both the NS and control subjects and that the NS group performed in a similar manner to control subjects. These findings are considered in terms of current theories of subcortical language function Learning outcomes: As a result of this activity, the reader will obtain information about the debate surrounding the role of subcortical language mechanisms and be provided with new information on the comparative picture description abilities of individuals with known vascular and degenerative subcortical pathologies and healthy control participants. (c) 2005 Elsevier Inc. All rights reserved.

The phonological awareness abilities of children with cerebral palsy who do not speak

To investigate the importance of the connection between being able to speak and the emergence of phonological awareness abilities, the performance of children with cerebral palsy (five speakers and six non-speakers) was assessed at syllable, onset-rime, and phoneme levels. The children were matched with control groups of children for non-verbal intelligence. No group differences were found for the identification of syllables, reading non-words, or judging spoken rhyme. The children with cerebral palsy who could speak, however, performed better than the children with cerebral palsy who could not speak and the control group of children without disabilities, judging written words for rhyme. The children with cerebral palsy who could not speak performed poorly in comparison to those who could speak ( but not the control group of children) when segmenting syllables and on the phoneme manipulation task. The findings suggest that non-speaking children with cerebral palsy have phonological awareness performance that varies according to the mental processing demands of the task. The ability to speak facilitates performance when phonological awareness tasks ( written rhyme judgment, syllable segmentation, and phoneme manipulation) require the use of an articulatory loop.

Longitudinal associations between children's phonological processing abilities, ADHD-like behaviour ratings and early reading develpment

The current study examined the contribution of phonological processing abilities and ADHD-like behaviours to first-grade word reading ability. 136 children were tested at the beginning and end of first grade. At both times, teachers rated children on hyperactive, inattentive, and oppositional behaviour. Children were given tests of letter knowledge at T1 and tests of word reading, phonological sensitivity, phonological memory, rapid automatised naming, and vocabulary at T1 and T2. Regression analyses revealed that, of the behavioural measures, inattention made the strongest contribution to T2 reading, even after controlling for the effects of T1 reading, hyperactivity, and oppositional behaviour. Hyperactivity did not explain variance in T2 reading once the effect of inattention was controlled. Inattention predicted 4.7% independent variance in T2 word reading ability, even after the effects of T1 reading, vocabulary, and phonological processing were controlled. Although phonological processing predicted 9.3% independent variance in T2 word reading, even after the effects of reading, vocabulary, and inattention were controlled, the effects of phonological processing may have been partly mediated by inattention. This research indicates that inattention contributes to the prediction of early reading development in unselected populations, and that this influence is independent of other key cognitive predictors of reading ability.