Efficacy of a Brief Relaxation Training Intervention for Pediatric Recurrent Abdominal Pain

This study is a preliminary investigation of the efficacy of a brief intervention for recurrent abdominal pain (RAP) via a multiple baseline across subjects design. The intervention consisted of a single 1-hour session including psychoeducation and coaching of breathing retraining; the length, duration, and content of the intervention were designed with a goal of maximum portability to primary-care settings. Five children with recurrent abdominal pain participated in this study, 1 of whom served as a pilot participant. Children received the intervention at 1-week intervals. Parent and child reports of each child's abdominal pain, general somatic complaints, functional disability, and anxiety were collected throughout the study. All children participated in a 3-month follow-up session. Results indicated that this brief intervention was successful in lessening abdominal pain, as demonstrated by decreased Abdominal Pain Index (API) scores in two children and decreased abdominal pain following breathing retraining practice in all children. The intervention was also successful in decreasing some children's general somatic symptoms. Functional disability and anxiety symptoms remained consistent for all children throughout the study, which may be due to low levels of these symptoms pretreatment. Limitations and directions for future research are discussed.     

Electroencephalographic registration of low concentrations of isoamyl acetate

Previous research has demonstrated electroencephalogram (EEG) changes in response to low-odor concentrations, resulting in near-chance detection. Such findings have been taken as evidence for olfaction without awareness. We replicated and extended previous work by examining EEG responses to water-water control, 0.0001, 0. 001, 0.01, and 1 ppm isoamyl acetate (IAA) in water paired with water only. Detection was above chance (>50%) for.001 and above, and alpha decreased only to those concentrations, suggesting that EEG changes corresponded to IAA awareness. However, when correct trial EEGs were compared to incorrect trial EEGs during.001 ppm, right posterior/central alpha decreased during incorrect trials and alpha decreased more globally (including frontal sites) during correct trials. These data may not reflect awareness or unawareness per se. Instead, results are discussed regarding activation of perceptual systems in the posterior region during incorrect trials and the activation of frontal action systems during a subset of correct trials.     

Sample size, confidence, and contingency judgement.

According to statistical models, the acquisition function of contingency judgement is due to confidence increasing with sample size. According to associative models, the function reflects the accumulation of associative strength on which the judgement is based. Which view is right? Thirty university students assessed the relation between a fictitious medication and a symptom of skin discoloration in conditions that varied sample size (4, 6, 8 or 40 trials) and contingency (delta P = .20, .40, .60 or .80). Confidence was also collected. Contingency judgement was lower for smaller samples, while confidence level correlated inversely with sample size. This dissociation between contingency judgement and confidence contradicts the statistical perspective.     

Probability weights in rank-dependent utility with binary even-chance independence

We examine the effects of a weak version of expected utility's independence axiom on the probability weighting function in rank-dependent utility. Our weak independence axiom says that a 50-50 lottery between a two-outcome gamble and its certainty equivalent is indifferent to the certainty equivalent. A variety of nonlinear probability weighting functions satisfy this axiom, but most weighting functions proposed by others do not. Nevertheless, the axiom accommodates weighting functions that are quite similar to the inverse S-shaped concave-convex functions of others that overvalue small probabilities and undervalue large probabilities.     

Perceiver and relationship effects on perceptions of HIV status: A naturalistic study in a high drug use sample.

This article examines the effect of target, perceiver, and relationship characteristics on the perceiver's assessment that the target may be HIV seropositive (HIV+). A sample of 267 persons was recruited from low income, high drug use neighborhoods. Respondents (perceivers) were asked to name people (targets) with whom they had a social, drug sharing, or sexual relationship. Perceivers described 1,640 such relationships. Perceivers were asked about the targets' age, gender, and race/ethnicity, whether the targets were good-looking, their level of trust with the target, and how long they had known them. Perceivers were then asked to evaluate the chances that the target mentioned was HIV+. Two regression models were estimated on the 1,640 relationships mentioned. Model 1 included variables reflecting only target characteristics as independent variables. Model 2 included variables reflecting target characteristics as well as variables reflecting perceivers and perceiver-target relationship characteristics. The results showed that targets that were female, younger, and good-looking were perceived as being less likely to be HIV+. However, when accounting for perceiver and relationship effects, some of the target characteristic effects disappeared.     

"Men of Stone and Children of Struggle": Latin American Liberationists at the End of History

This article critiques the political theory of Latin American liberationists and suggests a theological source of resistance to the regnant capitalist order. Drawing on the work of Raymond Williams, the liberationists' commitment to "politcs as statecraft," manifest originally in the hopes of seizing the state and more recently in the praise of an emergent civil society, is shown to be unable to resist "paranational hyper capitalism." Instead, liberationists should reconsider the church as a "public", as a social, political, economic formation in its own right. Toward this end they might learn from the Christian base communities.     

Anxiety and Depression in Children: A Preliminary Examination of the Utility of the PANAS-C

Recent research has questioned the validity of identifying depression and anxiety as separate constructs in children. The current investigation examined the usefulness of the Positive and Negative Affect Schedule for Children (PANAS-C) in differentiating between anxiety and depression in children while also providing needed reliability and validity data on the PANAS-C. In addition, the relationship between positive and negative affect and coping was examined. Subjects included 110 third through fifth graders from a semirural public school setting. Children completed the PANAS-C, as well as self-report measures of depression, anxiety, and coping strategies. Moderate item–total correlations and high internal consistency indicated that the PANAS-C has good reliability. Validity results were mixed: a two-factor solution resembled previous studies, and negative affect was associated with avoidance coping strategies whereas positive affect was associated with approach coping strategies, as expected. However, correlations of positive and negative affect, anxiety, and depression scales suggest that positive and negative affectivity are negatively related in children as opposed to separate and independent constructs. Results of the present investigation question the validity of the use of the PANAS-C for differentiating anxiety and depression with this age group and lend support to the possibility that high overlap between anxiety and depression in this age group may be specific for childhood depression.