Lifespan changes in working memory in fragile X premutation males

Fragile X syndrome is the world’s most common hereditary cause of developmental delay in males and is now well characterized at the biological, brain and cognitive levels. The disorder is caused by the silencing of a single gene on the X chromosome, the FMR1 gene. The premutation (carrier) status, however, is less well documented but has an emerging literature that highlights a more subtle profile of executive cognitive deficiencies that mirror those reported in fully affected males. Rarely, however, has the issue of age-related declines in cognitive performance in premutation males been addressed. In the present study, we focus specifically on the cognitive domain of working memory and its subcomponents (verbal, spatial and central executive memory) and explore performance across a broad sample of premutation males aged 18–69 years matched on age and IQ to unaffected comparison males. We further tease apart the premutation status into those males with symptoms of the newly identified neurodegenerative disorder, the fragile X-associated tremor/ataxia syndrome (FXTAS) and those males currently symptom-free. Our findings indicate a specific vulnerability in premutation males on tasks that require simultaneous manipulation and storage of new information, so-called executive control of memory. Furthermore, this vulnerability appears to exist regardless of the presence of FXTAS symptoms. Males with FXTAS symptoms demonstrated a more general impairment encompassing phonological working memory in addition to central executive working memory. Among asymptomatic premutation males, we observed the novel finding of a relationship between increased CGG repeat size and impairment to central executive working memory.     

Validity evidence and measurement equivalence for the Dutch translation of the conditional reasoning test for aggression

The Conditional Reasoning Test for Aggression (CRT-A) indirectly measures the implicit motive to aggress by engaging respondents in inductive reasoning tasks. Most research involving the CRT-A has been based on the original English version of the test with most data being collected in the United States. The purpose of the current paper is to evaluate the psychometric properties of a Dutch translation of this test and to examine if it could be used to predict measures of integrity. In the first of two studies, we evaluated the psychometric properties and measurement equivalence of the CRT-A across US and Dutch samples. In the second study, we examined validity evidence for the Dutch version of the CRT-A. Results from Study 1 indicated that the test was mostly equivalent across cultures (i.e. limited differential item functioning was detected). Results from Study 2 demonstrated that the Dutch version of the CRT-A was correlated with measures of behavioral integrity and provided incremental prediction of integrity over and above traditional self-report measures of explicit personality traits. We discuss the implications for using CRTs across different cultures and languages.     

As we fall asleep we forget about the future: A quantitative linguistic analysis of mentation reports from hypnagogia

We present a quantitative study of mental time travel to the past and future in sleep onset hypnagogia. Three independent, blind judges analysed a total of 150 mentation reports from different intervals prior to and after sleep onset. The linguistic tool for the mentation report analysis grounds on established grammatical and cognitive-semantic theories, and proof of concept has been provided in previous studies. The current results indicate that memory for the future, but not for the past, decreases in sleep onset – thereby supporting preliminary physiological evidence at the level of brain function. While recent memory research emphasizes similarities in the cognitive and physiological processes of mental time travel to the past and future, the current study explores a state of consciousness which may serve to dissociate between the two.     

Attitudes Toward Parenting Strategies,Potential for Child Abuse,and Parental Satisfaction of Ethnically Diverse Low-Income U.S. Mothers

Abstract

Among a sample of 176 low-income mothers from 3 ethnic groups in the United States, the authors investigated ethnic differences in attitudes toward preferred parenting strategies, or styles; ethnic differences in the potential for child abuse; and the relationship between parenting strategies, the potential for child abuse, and parental satisfaction. They distributed the Maternal Reactions to Child's Deviant Behavior subscale (K. M. Rickard, W. Graziano, & R. Forehand, 1984), a shortened version of the Child Abuse Potential Inventory (CAPI; J. S. Milner & R. C. Wimberley, 1979), and a Parental Satisfaction Scale (N. P. Medora, S. M. Wilson, & J. Larson, 1996) to the participants. The results indicated no significant ethnic differences in preferred parenting styles. Mothers from all 3 ethnic groups ranked praise and reasoning as the 1st and 2nd preferred parenting strategies. There were no ethnic differences in the perceived potential for child abuse. Parental satisfaction was negatively related to 2 of the CAPI subscales-Loneliness and Problems. The parenting strategy reasoning was positively correlated with parental satisfaction.     

Alternative Measures of American National Identity: Implications for the Civic‐Ethnic Distinction

Studies of national identity distinguish between ethnic and civic nations and have sought to identify these alternative conceptions of national identity in public opinion. The standard measurement technique is to assess the normative content of American national identity by asking survey respondents to rate the importance of particular traits for making someone a “true” American. We argue that such measures are problematic, chiefly because of the impact of nonrandom measurement error. We explore the influence of using ranking measures instead of ratings, using a survey experiment conducted on a nationally representative sample of Americans in 2008. The ranking method is superior for distinguishing between ethnic and civic conceptions of nationhood and, therefore, for predicting preferences on issues such as immigration policy. We develop a new statistical method that effectively “converts” ratings into scores that approximate rankings, resulting in the creation of more valid measures of both ethnic and civic national identities.     

Attentional set-shifting in fragile X syndrome

The ability to flexibly adapt to the changing demands of the environment is often reported as a core deficit in fragile X syndrome (FXS). However, the cognitive processes that determine this attentional set-shifting deficit remain elusive. The present study investigated attentional set-shifting ability in fragile X syndrome males with the well-validated intra/extra dimensional set-shifting paradigm (IED) which offers detailed assessment of rule learning, reversal learning, and attentional set-shifting ability within and between stimulus dimensions. A novel scoring method for IED stage errors was employed to interpret set-shifting failure in terms of repetitive decision-making, distraction to irrelevance, and set-maintenance failure. Performance of FXS males was compared to typically developing children matched on mental age, adults matched on chronological age, and individuals with Down syndrome matched on both mental and chronological age. Results revealed that a significant proportion of FXS males already failed prior to the intra-dimensional set-shift stage, whereas all control participants successfully completed the stages up to the crucial extra-dimensional set-shift. FXS males showed a specific weakness in reversal learning, which was characterized by repetitive decision-making during the reversal of newly acquired stimulus-response associations in the face of simple stimulus configurations. In contrast, when stimulus configurations became more complex, FXS males displayed increased distraction to irrelevant stimuli. These findings are interpreted in terms of the cognitive demands imposed by the stages of the IED in relation to the alleged neural deficits in FXS.     

The death and resurrection of the American religious marketplace

This article expands upon existing academic literature examining both the decline and fragmentation of the American Christian Right. Specifically, it explores the impact of a fragmented evangelical body from a religious market perspective. It asserts that recent declines in evangelical church membership are largely due to the over-generality of its message, which in and of itself is a by-product of the broadcast age. Predictably, this over-generality has failed to cater to the diverse theological and spiritual needs of American churchgoers. However, with the rapid proliferation of Internet technologies, new religious frontiers are being explored and, as a result, many Christians are going elsewhere to tend to their spiritual needs. This process further reinforces the fragmentation of the evangelical body. This article similarly considers how with the growth of new and divergent religious movements, such as creation care and the emerging church, new religious leaders are finding their voice and preaching a message that diverges significantly from the old evangelical vanguard. While some might be tempted to view these developments in purely theological terms, the cultural fragmentation of the American evangelical community is not just a religious issue. A vibrant religious marketplace threatens the religious monopoly of the Christian Right, and by extension, the articulation of social conservatism and Republican politics. As new religious movements grow, so too do new conceptualisations and understandings of what it means to be a Christian and to hold Christian values. In facilitating the breakdown of the religious monologue of the Christian Right, the Internet is unsettling long-established political coalitions and giving rise to new political realities. To support these claims, this article relies on the combination of previous academic works, the reporting of recent religious and political developments, as well as personal interviews. The aim of this article is to provide a rich textual account of the state of evangelical Christianity as it is lived and experienced in a new media saturated environment.     

The Mediating Effects of Verbal Skills in the Relationship Between Low Birth Weight and Childhood Aggressive Behaviour

Prenatal and perinatal risk factors, such as low birth weight, have been linked to higher levels of aggressive and destructive behaviours during childhood. Although low birth weight is associated with childhood externalizing behaviour, the mechanisms underlying this relationship remain open to empirical investigation. The current study extends the current literature by examining whether verbal skills mediate the relationship between low birth weight and childhood externalizing behaviour. A longitudinal analysis of data from the Fragile Families and Child Well‐being Study reveals that verbal skills appear to mediate the influence of low birth weight on serious aggression and destructive behaviour at age 5. The implications of this research are discussed. Copyright © 2012 John Wiley & Sons, Ltd.     

Immigrant Acculturation and Transnationalism: Israelis in the United States and Europe Compared

This article examines relations between social integration into host societies, religio‐ethnic acculturation into group belonging, and ties to home country among Israeli émigrés in the United States and Europe. I use data from a 2009–2010 Internet survey into which I incorporated country‐contextual characteristics. The results of multivariate analyses show that a social integration combining duration of residence abroad and local citizenship enhances religio‐ethnic identification. Another measure of integration, social networks, deters group behaviors. All measures of general integration inhibit attachment to the home country, whereas religio‐ethnic acculturation is largely insignificant for transnationalism. The religiosity of the new country does not influence immigrants’ religio‐ethnic patterns or homeland attachment. Insofar as group size is a significant determinant of particularistic behaviors, it weakens them. The more policy‐based opportunities newcomers receive, the more they dissociate from group behaviors and homeland ties. Irrespective of individual and contextual factors, living in the United States encourages group affiliation more than living in Europe does. The results are discussed in reference to four working hypotheses—marginalization, integration, assimilation, and separation—and from a U.S.‐European comparative perspective.     

Virtues in action – the new look of character traits

The present study aimed to take fresh look at the nature and psychological meaning of consistency in character traits and virtuous behaviour as manifested in everyday life. To this end, a 10‐day experience‐sampling study was conducted. Using smartphone technology, a sample of 83 working mothers and fathers provided a total of 4,342 momentary behavioural reports while being in the role of the parent versus being in the job role. Consistent with recent research on personality traits, the findings of the present study showed that people express a wide range of virtue states in their everyday lives. Within‐person changes in virtue states were not random but were contingent on people's current role context and also meaningfully related to their momentary affective experiences. At the same time, people's average level of virtue states, their degree of variation in virtue states, and their signature ways of reacting to role contexts turned out to be stable, trait‐like individual difference characteristics. Discussion focuses on the implications for the conception of character traits in scientific psychology and beyond.