The Message Design Logics of Responses to HIV Disclosures

This article uses the theory of message design logics to investigate the relative sophistication of responses to disclosure of HIV status. In Study 1, 548 college students imagined a sibling revealing an HIV-positive diagnosis. Their responses to the HIV disclosures were coded as expressive (n= 174), conventional (n= 298), or rhetorical (n= 66). Type of message produced was associated with gender and HIV aversion. In Study 2, 459 individuals living with HIV rated response messages that were taken verbatim from Study 1. Expressive messages were rated lowest in quality, and rhetorical messages were rated highest. The discussion focuses on the utility of message design logics for understanding responses to HIV disclosures and the implications for message design logics

Intrafamily secrets in various family configurations: A communication boundary management perspective

Although extant literature suggests that blended, single‐parent, and biological/adoptive (i.e., nuclear) families differ in terms of the boundaries that separate family members, little systematic research has compared such boundaries. The current investigation examined this issue by focusing on communication boundaries as indexed by intrafamily secrets. As expected, college students in blended families reported that their original parents and siblings were more likely than their stepparents or stepsiblings to know the family secret that they reported in this study. This suggests the presence of a relatively rigid communication boundary between original family members and stepfamily members. Interestingly, participants in blended families, single‐parent families, and nuclear families were quite similar in terms of: (a) the number of intrafamily secrets they perceived in their family, (b) the topics of the secrets they reported, and (c) the functions they reported being served by the secrets. Also, regardless of family form, there was an inverse association between participants’ family satisfaction and their perceptions of how many intrafamily secrets their family held. Overall, in contrast to the literature that often portrays blended families and single‐parent families as particularly problematic, these results suggest remarkable similarities across family configurations in terms of communication boundaries. © 2000, Taylor & Francis Group, LLC

White matter integrity and cognition in chronic traumatic brain injury: A diffusion tensor imaging study

Traumatic brain injury (TBI) is a serious public health problem. Even injuries classified as mild, the most common, can result in persistent neurobehavioural impairment. Diffuse axonal injury is a common finding after TBI, and is presumed to contribute to outcomes, but may not always be apparent using standard neuroimaging. Diffusion tensor imaging (DTI) is a more recent method of assessing axonal integrity in vivo. The primary objective of the current investigation was to characterize white matter integrity utilizing DTI across the spectrum of chronic TBI of all severities. A secondary objective was to examine the relationship between white matter integrity and cognition. Twenty mild, 17 moderate to severe TBI and 18 controls underwent DTI and neuropsychological testing. Fractional anisotropy, axial diffusivity and radial diffusivity were calculated from the DTI data. Fractional anisotropy was the primary measure of white matter integrity. Region of interest analysis included anterior and posterior corona radiata, cortico-spinal tracts, cingulum fibre bundles, external capsule, forceps minor and major, genu, body and splenium of the corpus callosum, inferior fronto-occipital fasciculus, superior longitudinal fasciculus and sagittal stratum. Cognitive domain scores were calculated from executive, attention and memory testing. Decreased fractional anisotropy was found in all 13 regions of interest for the moderate to severe TBI group, but only in the cortico-spinal tract, sagittal stratum and superior longitudinal fasciculus for the mild TBI group. White Matter Load (a measure of the total number of regions with reduced FA) was negatively correlated with all cognitive domains. Analysis of radial and axial diffusivity values suggested that all severities of TBI can result in a degree of axonal damage, while irreversible myelin damage was only apparent for moderate to severe TBI. The present data emphasize that white matter changes exist on a spectrum, including mild TBI. An index of global white matter neuropathology (White Matter Load) was related to cognitive function, such that greater white matter pathology predicted greater cognitive deficits. Mechanistically, mild TBI white matter changes may be primarily due to axonal damage as opposed to myelin damage. The more severe injuries impact both. DTI provides an objective means for determining the relationship of cognitive deficits to TBI, even in cases where the injury was sustained years prior to the evaluation. © The Author (2007). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved