Performance of the CJDATS Co-Occurring Disorders Screening Instruments (CODSIs) among minority offenders

Previous research has shown the performance of the CJDATS Co-Occurring Disorders Screening Instruments (CODSI-MD and SMD)--six- and three-item instruments to screen for any mental disorder (CODSI-MD) and for severe mental disorders (CODSI-SMD), respectively--to be comparable or superior to other, longer instruments. This study tested the stability of the performance of the CODSI-MD and SMD across three racial/ethnic groups of offenders entering prison substance abuse treatment programs (n = 353), consisting of 96 African American, 120 Latino, and 137 White admissions. The Structured Clinical Interview (SCID) was used to obtain DSM-IV Axis I and II diagnoses; a lifetime SCID diagnosis of a mental disorder or a severe mental disorder was the criterion against which the CODSI-MD and SMD were validated. Results showed no statistical differences in sensitivity or specificity for either the CODSI-MD or SMD across the African American, Latino, and White prisoner groups. The value of the CODSI-MD and SMD as brief screens for mental disorders among offenders with diverse racial/ethnic backgrounds is discussed.     

Emotional support, conflict, depression, and relationship satisfaction in a romantic partner

One aim of this study was to determine the relative contribution of partner conflict and support to satisfaction with a romantic relationship when conflict and support are measured in terms of the same characteristics. Another aim was to ascertain whether support is indirectly associated with relationship satisfaction through reduced conflict and depression, as suggested by C. E. Cutrona (1996). The Relationship Assessment Scale (S. S. Hendrick, 1988), the Revised SCL-90-R Depression subscale (L. R. Derogatis, 1983), and a conflict and support scale were completed by 76 female and 35 male college students. Relationship satisfaction was explained only by support. Support was indirectly associated with relationship satisfaction through a reduction of depression but was not associated with conflict. The results suggest that a better understanding of satisfaction with a romantic relationship may be obtained through the study of support rather than conflict.     

Time does not cause forgetting in short-term serial recall

Time-based theories expect memory performance to decline as the delay between study and recall of an item increases. The assumption of time-based forgetting, central to many models of serial recall, underpins their key behaviors. Here we compare the predictions of time-based and event-based models by simulation and test them in two experiments using a novel manipulation of the delay between study and retrieval. Participants were trained, via corrective feedback, to recall at different speeds, thus varying total recall time from 6 to 10 sec. In the first experiment, participants used the keyboard to enter their responses but had to repeat a word (called the suppressor) aloud during recall to prevent rehearsal. In the second experiment, articulation was again required, but recall was verbal and was paced by the number of repetitions of the suppressor in between retrieval of items. In both experiments, serial position curves for all retrieval speeds overlapped, and output time had little or no effect. Comparative evaluation of a time-based and an event-based model confirmed that these results present a particular challenge to time-based approaches. We conclude that output interference, rather than output time, is critical in serial recall.     

Death in the family and HIV risk-taking among intravenous drug users

The objective of this study was to ascertain the relationship among intravenous drug users between high levels of HIV risk-taking and both (a) deaths of significant others experienced before age 15, and (b) unresolved mourning; 592 out-of-treatment intravenous drug users (71.4% male; mean age = 40.5), stratified as to zip code, were recruited in San Jose, CA, as part of a CDC multisite investigation of access to sterile needles and HIV infection. HIV serostatus tests were obtained and an individual, structured interview administered covering demographics, employment, mental health, HIV risk-taking behavior, family contacts/closeness, and family deaths/mourning. Multivariate analyses indicated that the extent of HIV risk-taking in adulthood was highly and positively related to (a) the number of close-family-member deaths participants experienced as youth, (b) the extent to which respondents effectively mourned sudden family losses, (c) the extent to which those lost were emotionally close to the respondent, and (d) whether or not the respondent attended the funerals of lost relatives. Canonical correlations between sets of death/mourning and HIV risk-taking variables were .55 for the total sample (p < .001) and .70 for the subsample who experienced early and sudden family deaths (p < .001). In both analyses, it made little difference if age and gender were partialed out. These findings give credence to the importance of (a) unexpected deaths experienced early in life, and (b) related, inadequate mourning, as factors in progressively higher adult HIV risk-taking. They suggest that treatment for such individuals and their families should involve grief work dealing with unresolved losses within the family of origin. In addition, prevention efforts may have to revise their modus operandi toward both more focused and more family-based methods of outreach and engagement.     

A cautionary tale of two statistics: partial correlation and standardized partial regression

Partial correlation and standardized partial regression are widely used to control for other variables in cross-sectional and longitudinal studies. Two aspects of these statistics can radically alter the interpretation of data and so deserve attention. First, their sign will be opposite to that of the original zero-order correlation when this correlation is of the same sign as and smaller than the product of the other 2 correlations. Second, their size will be considerably larger than a weak zero-order correlation when either that correlation is positive and the product of the other 2 correlations is negative or that correlation is negative and the product of the other 2 correlations is positive. The first aspect is illustrated with data from J. M. Gottman and L. J. Krokoff (1989) on initial conflict behavior and initial and later marital satisfaction, and the 2nd aspect is illustrated with data from C. L. Heavey, C. Layne, and A. Christensen (1993) on the same issue. Their interpretation of their findings is questioned.     

A Multilevel Contextual Model of Neighborhood Collective Efficacy

Different data sources were used to examine hypothesized relations among neighborhood-, family-, and individual-level variables, and perceptions of neighborhood collective efficacy. Data were from 1,105 individuals (56% female, 42% African American, and 58% White) nested within 55 neighborhoods and 392 families, analyzed within a multilevel design using a 3-level model. At the neighborhood level, the study examined relations between Census, police, and neighborhood representative indicators. At the family level, the model examined the influence of marital status and family income. At the individual level, gender and age were examined. Results indicated that age at the individual level, marital status at the family level, and poverty and perceived gang activity at the neighborhood level predicted levels of neighborhood collective efficacy. The study illustrated significant variation across neighborhoods and families, and demonstrates the utility of combining different sources of neighborhood data to examine relations of interest within a multilevel framework.     

EPS Mid-Career Award 2004: brain mechanisms of attention

There are many varieties of "attention", to some extent separate yet working together to produce coherent perception, thought, and behaviour. Using data from human behaviour, functional neuroimaging, and single-cell recording in the behaving monkey, I consider different levels of attention and their basis in physiological mechanisms of biased competition. Beginning with visual attention, I suggest that processing is competitive in many brain systems that code visual input. Competition is biased towards stimuli that match task requirements and is integrated between systems coding different object properties. The result is flexible, object-based attentional selection. In the second part of the paper, I describe recent experiments on attentional competition within and between sensory modalities. Though competition is often modality specific, more global levels of interference are also easy to demonstrate. In the third part of the paper, I move to frontoparietal cortex and to a pattern of similar brain regions recruited by many different cognitive demands. This multiple-demand (MD) pattern, I suggest, reflects neurons with highly flexible response properties, adapting to represent the information and events of many different tasks. Biased competition in MD regions may play a central role in broad attentional capacity limits and attentional focusing. More generally, I suggest that biased competition is characteristic of many different cognitive domains and brain systems. Coherent "attention" develops as different systems converge to work on related cognitive content.     

Child well-being in an era of welfare reform: the sensitivity of transitions in development to policy change

This study examined the age-specific pattern of effects of welfare policies on child achievement. Drawing from 7 random-assignment welfare and antipoverty evaluations that provided more than 30,000 observations of children's achievement, this study found that times of developmental transition are the only periods sensitive to the changes in families brought about by these policies. More specifically, small positive effects of welfare and antipoverty policies were found for children making the transition into middle childhood, and small negative effects of these same policies were found for children making the transition out of middle childhood and into early adolescence. Effects were robust across various program groupings and could not be attributed to family characteristics that differ for children of different ages. This research informs the understanding of how changes in employment and income for low-income parents affect development across childhood.