Structural brain variation,age, and response time

Response time (RT) generally slows with aging, but the contribution of structural brain changes to this slowing is unknown. We used voxel-based morphometry (VBM) to determine gray matter (GM) and white matter (WM) brain volumes in 9 middle-aged adults (38–58 years old) and 9 seniors (66–82 years old). We correlated brain volumes with RT assessed in both a simple visual stimulus-response task and a visual continuous recognition memory task. No GM correlations with simple RT were significant; there was one WM correlation in the right fusiform gyrus. In the memory task, faster RT was correlated (p<.05, corrected) with less GM in the globus pallidus, the parahippocampus, and the thalamus for both groups. Several Brodmann areas (BA) differed between the groups such that in each area, less GM was correlated with slower RTs in the middle-aged group but with faster RTs in the senior group (BAs 19, 37, 46, 9, 8, 6, 13, 10, 41, and 7). The results suggest that individual differences in specific brain structure volumes should be considered as potential moderating factors in cognitive brain imaging studies.     

Mother Knows Best? Mother and Child Report of Behavioral Difficulties of Children of HIV-Infected Mothers

Children of HIV-infected mothers have more psychosocial adjustment difficulties than do those of noninfected mothers. In this study, child psychosocial adjustment in children of HIV-infected women is examined across the three stages of HIV-infected: asymptomatic, symptomatic and AIDS. Participants were 99 HIV-infected women and 148 noninfected women. Children were not identified as being HIV infected. Mother and child reports of behavioral difficulties are compared, and competing hypotheses about mother report of child behavior difficulties are tested. Results indicate an ascending linear trend for child report of internalizing and externalizing difficulties from the noninfected stage through increasingly severe stages of HIV-infection. According to mother report, child externalizing and internalizing difficulties are nonlinear, as mothers report an increase through the infected symptomatic stage, then a decrease in the AIDS stage. Implications for assessment, prevention and intervention in families with maternal HIV infection are discussed.     

What is happening in the world of therapeutic communities?

This overview of the contributions to the special edition illustrates something of how the collection of papers reflects the marginal nature of therapeutic communities, and makes parallels as to how they are forever struggling to survive, yet generate a passion of ideas and intellectual resilience that no project-managed health service can extinguish. It briefly describes the theoretical and geographical terrain covered, and signals how the cross-disciplinary incorporation of congruent ideas can be added to the traditional bedrock of therapeutic community practice. It ends by stating the context of the new, and seemingly successful, organization which assembled these contributions into its inaugural conference – and suggests that the journey could, and ultimate should, go further.     

The Mediation Myth

The mediation myth is the false belief that mediation is actually estimated in the typical mediation analysis. This myth is based on a trifecta of shortcomings: (1) the typical mediation study relies on an inadequate design; (2) the researcher uses a flawed analysis strategy; and (3) there is scant attention to assumptions that are required when estimating mediation. These problems stem from overgeneralizing the classical product method for estimating mediation and overreliance on statistical significance testing as a decision criterion in mediation analysis. The goals of this article are to (1) raise awareness of these difficulties among researchers and (2) provide a roadmap about design and analysis options for a more rigorous and scientifically valid approach to mediation analysis.     

Life events and psychological well-being in old age

Abstract

Although life event research has burgeoned in recent years, little attention has been paid to the prevalence of events among the elderly or their relationship to psychological well-being. This paper presents data from a three-wave longitudinal study of community elderly in Aberdeen. Negative life events were highly prevalent among both survivors [N=349) and non-survivors [N=108], but the relatively small differences between the groups indicate that attrition does not seriously affect longitudinal findings. Longitudinal analysis of survivors' data was performed using LISREL and yielded a model with a goodness of fit index of 0.918, demonstrating a close fit between the data and the model. The model parameters indicate that those in poor psychological state were more likely to report serious non-health events than health events, although the latter were more likely than the former to result in a decline in psychological well-being, even after prior psychological state was taken into account. While elderly people with low social integration experienced more severe reactions to life events in the short term than those with high social integration, there were no significant long term effects, even for those reporting highly stressful events. There was no evidence of a sub-group of elderly people lacked into a cycle of serious life events. However life events were not random occurrences; serious health events were more often reported by those with low education while women and those in lower social classes were more likely to report serious non-health events. Overall, long term disruption, directly attributable to life events, was minimal when viewed within the context of the community elderly's stable psychological state.     

Samoa and the Christian state ideal

This article explores the notion of a Christian state in the context of the South Pacific island nation of Samoa. Samoa is not a Christian state in the constitutional de jure sense. There is no formal entrenchment of establishment of Christianity as the official religion. But it is a de facto Christian state in that the substance of its laws reflects Christian beliefs. The article also considers whether it is a Christian nation. In many cultural and sociological senses it is. In terms of Christian practice however, an affirmative verdict is highly doubtful. Finally, the article suggests that asking the Christian nation question might be misplaced, for no nation can be a ‘chosen’, covenantal nation, à la Israel, in the New Testament era.     

The Relation of Parent and Child Gender to Parental Tolerance of Child Disruptive Behaviors

Parental tolerance has been defined as the degree to which a parent tends to be annoyed by his or her child’s disruptive behavior. The purpose of the current study is to examine the relation of both parent and child gender to parental tolerance of child disruptive behaviors. Participants were 150 parents with 3–6 year-old at-risk children (47.5 % girls) who sought help with parenting of their child’s oppositional defiant behaviors. Tolerance was measured by the difference between parent ratings of intensity on 36 disruptive behaviors and whether each behavior was identified as a problem (resulting in a score of either high, expected, or low tolerance). A 2 (child gender) by 2 (parent gender) analysis of variance was conducted on the tolerance score. A significant interaction between child and parent gender emerged: Mothers were equally tolerant of boys’ and girls’ oppositional defiant behavior but fathers were more tolerant of boys’ than girls’ oppositional behavior. Exploratory analyses suggested that this interaction may be qualified by clinical status of the child. Implications and future directions are discussed.