Examining the development of attention and executive functions in children with a novel paradigm.

The development of attention and executive functions in normal children (7-12 years) was investigated using a novel selective reaching task, which involved reaching as rapidly as possible towards a target, while at times having to ignore a distractor. The information processing paradigm allowed the measurement of various distinct dimensions of behaviour within a single task. The largest improvements in vigilance, set-shifting, response inhibition, selective attention, and impulsive responding were observed to occur between the ages of 8 and 10, with a plateau in performance between 10 and 12 years of age. These findings, consistent with a step-wise model of development, coincide with the observed developmental spurt in frontal brain functions between 7 and 10 years of age, and indicate that attention and executive functions develop in parallel. This task appears to be a useful research tool in the assessment of attention and executive functions, within a single task. Thus it may have a role in determining which cognitive functions are most affected in different childhood disorders.     

Motor preparation, motor execution, attention, and executive functions in attention deficit/hyperactivity disorder (ADHD).

Attention and executive functions were investigated in medicated and unmedicated children with ADHD combined type using a novel selective reaching task. This task involved responding as rapidly as possible to a target while at times having to ignore a distractor. Results indicated that unmedicated children with ADHD showed slow and inaccurate responding. Slow responding reflected problems at the stage of movement preparation but not movement execution. An attentional impairment, rather than a motor planning problem per se, appeared to underlie the slow movement preparation. Inaccurate responding reflected problems with response inhibition and selective attention, impulsivity, set-shifting, and difficulties in maintaining vigilance. Although medicated children with ADHD did not show slow movement preparation, they did show some response inaccuracy, resulting especially from impulsive responding.These findings suggest that ADHD is characterized by slow motor preparation (but not motor execution), and deficits in selective attention, vigilance, and executive functions. Preliminary results suggest that stimulant medication may resolve some of these motor, attentional and executive function deficits.     

Physical self-concept and self-esteem mediate cross-sectional relations of physical activity and sport participation with depression symptoms among adolescent girls.

The authors tested whether physical self-concept and self-esteem would mediate cross-sectional relations of physical activity and sport participation with depression symptoms among 1,250 girls in 12th grade. There was a strong positive relation between global physical self-concept and self-esteem and a moderate inverse relation between self-esteem and depression symptoms. Physical activity and sport participation each had an indirect, positive relation with global physical self-concept that was independent of objective measures of cardiorespiratory fitness and body fatness. These correlational findings provide initial evidence suggesting that physical activity and sport participation might reduce depression risk among adolescent girls by unique, positive influences on physical self-concept that operate independently of fitness, body mass index, and perceptions of sports competence, body fat, and appearance.     

Theory of Planned Behaviour, Skin Care and Pressure Sores Following Spinal Cord Injury

Objectives: To use the Theory of Planned Behaviour to explore factors associated with performing skin care behaviors and the occurrence of pressure sores in people with spinal cord injury. Design: A within-group cross-sectional design was used to assess 59 people with spinal cord injury living in the community. Of these, 17 participants returned a repeat assessment allowing a longitudinal examination of the relationship between intention and actual behaviour. Methods: A measure was developed in accordance with the Theory of Planned Behaviour guidelines through interviews with people with spinal cord injury. Measures of mood and knowledge of skin care behaviour were also included. Results: The Theory of Planned Behaviour components, mood and knowledge of skin behaviours predicted intention, skin care behaviour and occurrence of pressure sores. Knowledge of skin care was negatively correlated with occurrence of pressure sores (r=−.38, p < .01). Indirect perceived control was a particularly important predictor of pressure relief, accounting for 24% of the variance. Conclusions: Psychosocial factors, including the Theory of Planned Behaviour components, predicted skin care behaviours and the occurrence of pressure sores. These findings provide empirical support for the Theory of Planned Behaviour. The study also carries clinical implications for skin care education for people with SCI and their families.     

Computer-assisted communication and team decision-making performance: the moderating effect of openness to experience

This study examined the effects of computer-assisted communication on team decision-making performance as a function of the team's openness to experience. Seventy-nine teams performing a multiple-cue probability learning task were randomly assigned to 1 of 2 experimental conditions: (a) verbal communication or (b) computer-assisted communication (which combined verbal and computerized communication). The results indicated that access to computer-assisted communication improved the decision-making performance of teams, but only when the teams were high in openness to experience. This effect was observed using both global openness and more specific openness facets, as well as a variety of team-level aggregation strategies. Moreover, the beneficial effects of openness in computer-assisted conditions were mediated by the efficiency with which teams integrated verbal and computerized forms of communication.     

Decision Making with Uncertain Information: Learning from Women in a High Risk Breast Cancer Clinic

Patients and practitioners may believe that clinically validated laboratory tests provide definitive information. Genetic counselors know this is not always so, and the possibility of inconclusive genetic test results is often discussed in the pretest counseling session. This added discussion topic prolongs the process of genetic counseling, but if there is inadequate patient understanding, patient frustration may be high when receiving a result of uncertain significance, and patients may make decisions about subsequent medical management based on incorrect assumptions. For patients/participants in a research setting, where the clinical validity of testing may be unclear, some patients/participants may still want to use test results to influence their medical management. This paper presents findings from a qualitative study wherein 15 women from the High Risk Breast Cancer Clinic at Utah's Huntsman Cancer Institute discussed how uncertainty regarding results affected their decision making. The women were randomly selected from 3 categories--women with test results of uncertain significance; women without cancer who have a mutation; and women who are members of high-risk families, but for whom no mutation was found. Study findings will be used in future studies to better understand how to improve communication regarding uncertain results, especially in a research environment.     

Evaluating the success of Caucasian fathers in guiding adolescents

The purpose of this study was to identify guidance strengths and learning needs of fathers of adolescents. Perceptions of two generations were used to determine how well fathers perform as parents and realms of knowledge they have yet to acquire. The Parent Success Indicator, a 60-item Likert-type instrument, was administered to 126 Caucasian fathers and 185 adolescents. Significant differences obtained between generations for the total inventory, some scales, and many items. The amount of time spent together had the greatest influence on how both generations evaluated father success. Findings are discussed in terms of developing a curriculum to enhance the success of fathers.     

Effects of divided attention and speeded responding on implicit and explicit retrieval of artificial grammar knowledge

The artificial grammar (AG) learning literature (see, e.g., Mathews et al., 1989; Reber, 1967) has relied heavily on a single measure of implicitly acquired knowledge. Recent work comparing this measure (string classification) with a more indirect measure in which participants make liking ratings of novel stimuli (e.g., Manza & Bornstein, 1995; Newell & Bright, 2001) has shown that string classification (which we argue can be thought of as an explicit, rather than an implicit, measure of memory) gives rise to more explicit knowledge of the grammatical structure in learning strings and is more resilient to changes in surface features and processing between encoding and retrieval. We report data from two experiments that extend these findings. In Experiment 1, we showed that a divided attention manipulation (at retrieval) interfered with explicit retrieval of AG knowledge but did not interfere with implicit retrieval. In Experiment 2, we showed that forcing participants to respond within a very tight deadline resulted in the same asymmetric interference pattern between the tasks. In both experiments, we also showed that the type of information being retrieved influenced whether interference was observed. The results are discussed in terms of the relatively automatic nature of implicit retrieval and also with respect to the differences between analytic and nonanalytic processing (Whittlesea & Price, 2001).     

Optimizing the alliance in couple therapy

The complexity of the relation between alliance and outcome in couple therapy was investigated in a study of 47 couples in brief therapy. Self-rated alliance was measured after the first and third sessions using the couple version of the Working Alliance Inventory. The results indicated that the correlation between alliance and outcome was significantly stronger when the partners agreed about the strength of the alliance, when the male partner's alliance was stronger than the female's, and when the strength of both partners' alliance increased as therapy progressed. The authors suggest that a unique feature of couple therapy is that the partners have both a preexisting relationship with each other (allegiance) and an alliance with the therapist to balance.