Simple and complex mental addition across development

Students in Grades 1, 4, 7, and 10 were timed as they solved simple and complex addition problems, then were presented similar problems in an untimed interview. A manipulation of confusion between addition and multiplication, in which multiplication answers were given to addition problems (3 + 4 = 12), revealed evidence for the hypothesized interrelatedness of these operations in memory only in 10th graders. The overall pattern of results suggests a strong reliance on memory retrieval, even in the first-grade group, with discernible time differences when “procedural” knowledge of carrying is required for problem solution. The results were judged consistent with a fact retrieval model which invokes explicit procedural information when problem difficulty is high or when processes like carrying and estimating magnitudes are required. In agreement with several other reports, the overall slowing of performance to larger problems is best explained in terms of normatively defined problem difficulty or associative strength in memory.     

Influences of metamemory on performance predictions for text

When predicting future performance on tests over text material, do individuals estimate retention in addition to assessing comprehension? In Experiment 1, participants either rated their comprehension or predicted performance for each text, with lower ratings indicating lower confidence either in comprehension or in eventual performance. Judgement magnitude was significantly lower for performance predictions than for comprehension ratings, suggesting that predictions were based partly on retention estimates. In Experiment 2, predictions varied with anticipated test delay (15 min or 2 weeks) whereas comprehension ratings did not, providing further evidence that individuals estimate retention when predicting performance. Analyses of individual differences suggest that both good and poor performers incorporate retention estimates when predicting performance, but better performers do so in a more discriminative manner. Implications for theory of metacognitive judgements are discussed.     

Who Wears the <Emphasis Type="Italic">Hijab</Emphasis>? Predictors of Veiling in Greater Jakarta

Indonesia is home to the world’s largest Muslim population. In contrast to much of the Middle East, veiling in Indonesia is neither a deeply rooted cultural practice, nor it is universally practised among Muslim women. Just 30 years ago it was rare to see an Indonesian woman wearing a hijab or veil. Today, veiling has become a relatively common practice, particularly among middle-class Muslim women living in urban areas. Although statistics on the prevalence of veiling are scant, the fact of growing use of headscarves is widely accepted in the literature. This paper examines sociodemographic correlates of veiling among young women in the capital region of Indonesia. We analyse a representative sample of 1443 Muslim women aged 20–34 in Greater Jakarta in 2010. About 26% of the women surveyed wore the veil. We found a moderately strong association between veiling and other measures of religiosity, including self-reported subjective religiosity and frequency of reading religious texts. Our multivariate analysis suggests a positive association between educational attainment and the likelihood of veiling among young Muslim women. In discussing these findings, we draw upon the qualitative component of our study and the literature on Islam, gender, and modernity in Indonesia. The paper highlights the difficulty encountered examining the practice of veiling as a binary choice, and as a measure of religiosity.     

A review of social disinhibition after traumatic brain injury

Acquired social disinhibition refers to a debilitating behavioural syndrome commonly reported after a severe traumatic brain injury (TBI) and is characterized by inappropriate social behaviour, often described as immaturity and insensitivity towards others. These behaviours can have enduring effects on the social capability of the individual and their relationships with others. However, research into socially disinhibited behaviour after TBI has been thwarted by a lack of consensus in the literature on definition and measurement. This review provides an overview of our current understanding of the definition, measurement, prevalence, associated outcomes, neuropathology, and underlying mechanisms of social disinhibition after TBI. In addition, suggestions are made for future research to further our understanding of this syndrome with the eventual aim of rehabilitating problematic behaviours. It is concluded that an improved understanding of what causes disinhibited behaviour after TBI will be necessary for the development of effective treatment strategies aimed at the rehabilitation of underlying impairments.     

Salience drives overt selection of two equally relevant visual targets

In the present study, we investigated whether salience determines the sequence of selection when participants search for two equally relevant visual targets. To do this, attentional selection was tracked overtly as observers inspected two items of differing physical salience: one a highly salient color singleton, and the other a less salient shape singleton. Participants were instructed to make natural eye movements in order to determine whether two line segments contained within the two singletons were oriented in the same or in different directions. Because both singleton items were task-relevant, participants had no reason to inspect one item before the other. As expected, observers fixated both targets on the majority of trials. Critically, saccades to the color singleton preceded saccades to the less salient shape singleton on the majority of trials. This demonstrates that the order of attentional object selection is largely determined by stimulus salience when task relevance is equated.     

A Living Life, A Living Death: Bessie Head��s Writing as a Survival Strategy

This paper explores Bessie Head's writing as a survival strategy through which she transformed her lived experience into imaginative literature, giving meaning and purpose to a life under permanent threat from the dominant group first in South Africa and later in Botswana. This threat included the destructive effect of the many fixed labels imposed upon her including: a 'Coloured' woman, the daughter of a woman designated mad, an exile, a psychotic, a tragic black woman, and a Third World woman writer. Her endeavours to avoid and defeat such limited, static definitions produced work characterised by contradiction and paradox, through which she asserted her right to survive and determined, like Makhaya in When Rain Clouds Gather, to establish 'a living life' in place of the 'living death that a man could be born into' (Head 1989, 136). Through a combination of Head's personal letters and papers and her published work, it can be seen how her particular preoccupations and experiences including her life in exile, her beliefs about her origins, her relationship to her absent mother, her distress, her madness and her need for love and for work were transformed into writing which expresses not only the destructive circumstances of her life but also its life-affirming aspects. Her writing was also a means by which she could create identities to express the dangers she encountered from the all-pervasive power structures which influenced her life and her sense of self, as well as ways to transcend them, enabling her to say in the last years of her life 'I am no failure' (20.2.1986 KMM BHP).