Generalist genes and cognitive abilities in Chinese twins

This study considered how far nonverbal cognitive, language and reading abilities are affected by common genetic influences in a sample of 312 typically developing Chinese twin pairs aged from 3 to 11 years. Children were individually given tasks of Chinese word reading, receptive vocabulary, phonological memory, tone awareness, syllable and rhyme awareness, rapid automatized naming, morphological awareness and orthographic skills, and Raven's Colored Progressive Matrices. Factor analyses on the verbal tasks adjusted for age indicated two factors: Language as the first factor and Reading as the second factor. Univariate genetic analyses indicated that genetic influences were substantial for nonverbal cognitive ability and moderate for language and reading. Multivariate genetic analyses showed that nonverbal cognitive ability, language and reading were influenced by shared genetic origins, although there were specific genetic influences on verbal skills that were distinct from those on nonverbal cognitive ability. This study extends the Generalist Genes Hypothesis to Chinese language and reading skills, suggesting that the general effects of genes could be universal across languages.     

Electroconvulsive Shock and the Learning of Visual Patterns

The influence of peer models on the modification of impulsive response styles among fourth and sixth grade boys and girls was experimentally investigated. Sociometrically chosen peers were trained to provide reflective verbal and behavioral cues in responding to a selected task. They later performed these skills in the presence of a peer observer. A comparison of posttest performance measures of peer observers with control subjects revealed significant increases in response latencies and decreases in error scores among children exposed to peer models.     

Life in Overabundance: Agar on Life-Extension and the Fear of Death

In Humanity’s End: Why We Should Reject Radical Enhancement, Nicholas Agar presents a novel argument against the prospect of radical life-extension. Agar’s argument hinges on the claim that extended lifespans will result in people’s lives being dominated by the fear of death. Here we examine this claim and the surrounding issues in Agar’s discussion. We argue, firstly, that Agar’s view rests on empirically dubious assumptions about human rationality and attitudes to risk, and secondly, that even if those assumptions are granted, the fears that Agar adverts to are unlikely to dominate people’s lives if and when radical life-extension is made possible. Further, we claim that the structure of the decision-making process around life-extension is unlikely to be the way that it would have to be in order for Agar’s claims about fear of death to make sense. Finally, we argue that Agar is implicitly committed to a narrow conception of human value. In response, we suggest that the pursuit of life-extension can itself be seen as an expression of certain important aspects of our distinctively human nature.     

Tele‐web Psychology in Rural South Australia: The Logistics of Setting Up a Remote University Clinic Staffed by Clinical Psychologists in Training

There is a significant shortage of clinical psychology services in rural and remote Australia. It is proposed that tele‐web psychology may provide one potential solution to this inequity in health provision. A tele‐web psychology project was developed through a partnership between a university and country health service setting in rural South Australia. Tele‐web psychology was conducted by Provisional Psychologists on their first clinical placement, with patients attending sessions in a community mental health team hub in a regional centre north of Adelaide. This article describes the logistics of setting up a collaborative tele‐web psychology service and makes recommendations on how to expedite the success of this type of venture.     

Is social inhibition of return due to action co-representation?

When two individuals alternate reaching responses to visual targets presented on a shared workspace, one individual is slower to respond to targets occupying the same position as their partner’s previous response. This phenomenon is thought to be due to processes that inhibit the initiation of a movement to a location recently acted upon. However, two distinct forms of the inhibition account have been posited, one based on inhibition of an action, the other based on inhibition of an action and location. Furthermore, an additional recent explanation suggests the phenomenon is due to mechanisms that give rise to action congruency effects. Thus the three different theories differ in the degree to which action co-representation plays a role in the effect. The aim of the present work was to examine these competing accounts. Three experiments demonstrated that when identical actions are made, the effect is modulated by the configuration of the visual stimuli acted upon and the perceptual demands of the task. In addition, when the co-actors perform different actions to the same target, the effect is still observed. These findings support the hypothesis that this particular joint action phenomenon is generated via social cues that induce location-based inhibition of return rather than being due to shared motor co-representations.     

An Exploration of the Experience of Huntington’s Disease in Family Dyads: An Interpretative Phenomenological Analysis

Huntington’s disease (HD) is a hereditary, late onset, neurodegenerative disorder. Children of affected parents have a 50 % chance of inheriting HD. Research into the psychological consequences of HD for the family has focussed on individual family members, but little is known about the ways in which its impact is jointly experienced by members of these families. This is particularly important due to the hereditary nature of HD. To address this, the current study examined the experiences of dyads within affected families. Seven parent/adult child dyads were interviewed jointly about their experiences and relationships with their family and each other and interpretative phenomenological analysis was used to analyse the resultant data. Identified themes were: “A spectre hanging over us”: HD as a presence within the family, “Us against the world”: Protection, knowledge and control, and “That could be me in 50 years”: Cyclical changes in identity and role. These findings are examined in relation to previous research and indicate the need for an increased understanding of the needs of HD families. Clinical implications and suggestions for further research are discussed.