Probing the limits of tool competence: Experiments with two non-tool-using species (Cercopithecus aethiops and Saguinus oedipus)

Non-human animals vary in their ability to make and use tools. The goal of the present study was to further explore what, if anything, differs between tool-users and non-tool-users, and whether these differences lie in the conceptual or motor domain. We tested two species that typically do not use tools-cotton top tamarins (Saguinus oedipus) and vervet monkeys (Cercopithecus aethiops)-on problems that mirrored those designed for prolific tool users such as chimpanzees. We trained subjects on a task in which they could choose one of two canes to obtain an out-of-reach food reward. After training, subjects received several variations on the original task, each designed to examine a specific conceptual aspect of the pulling problem previously studied in other tool-using species. Both species recognized that effective pulling tools must be made of rigid materials. Subsequent conditions revealed significant species differences, with vervets outperforming tamarins across many conditions. Vervets, but not tamarins, had some recognition of the relationship between a tool's orientation and the position of the food reward, the relationship between a tool's trajectory and the substance that it moves on, and that tools must be connected in order to work properly. These results provide further evidence that tool-use may derive from domain-general, rather than domain-specific cognitive capacities that evolved for tool use per se.     

The Strategy and Attribution Questionnaire: Psychometric properties of a Lithuanian translation in an adolescent sample

The present study provides a preliminary validation of the Lithuanian version of the Strategy and Attribution Questionnaire (SAQ, Nurmi, et al., 1995), a self-reported measure of social and cognitive behavioral strategies. An attempt to validate SAQ subscales was made by correlating them with the Youth Self-Report (Achenbach, 1991) and school grades. This was done with a sample of 14- to 17-year-old adolescents (N= 734). The results showed that although internal consistency reliabilities were good, they were lower when compared with the original version of SAQ. The SAQ subscales were moderately associated with various validity criteria, such as anxiety/depression, withdrawal, social problems and somatic complaints and school grades. Results also showed moderate correlations between similar strategic components across achievement and affiliative situations. The results provide preliminary evidence for concurrent validity of the Lithuanian version of SAQ.     

Use of the ten-point clock test to compare executive functioning across 24 months in patients with subcortical vascular dementia

The Ten-point Clock Test can be used to identify early forms of Alzheimer's disease because it is reliable, well accepted, and easily administered at the bedside. Nevertheless, its clinical role in the detection of early dementia and its correlations with other cognitive processes is still under investigation. Vascular dementia is an uncertain nosological entity, in which unevenly distributed patterns of cognitive deficits comprising slowing of cognitive processing and impairment of executive function occur. The present study assessed how the Clock Test scores correlated with a number of other neuropsychological and functional tests in a sample of 144 patients with vascular dementia, who were followed for a period of 24 mo. At baseline, at 12 mo. and at 24 mo. subjects were administered a battery of tests, including the Mini-Mental State Examination, word fluency, visuospatial skills, an evaluation of hetero- and autotopognosia (knowledge of self), the Proverbs Test, and the Ten-point Clock Test. For these patients scores on the Clock Test correlated significantly with semantic abilities, with abstract reasoning capacities, visuospatial perception, and with right and left recognition.     

Suicidality in African American men: the roles of southern residence, religiosity, and social support

The rise in suicide by African Americans in the United States is directly attributable to the dramatic, nearly three-fold increase in suicide rates of African American males. Gibbs (1997) hypothesized high social support, religiosity, and southern residence are protective factors against suicidality for Black people. This hypothesis was tested among 5,125 participants from the National Comorbidity Survey; 299 were African American males. In this study we hypothesized that there would be significantly lower suicidality in the South, and social support and religiosity would mediate this relationship. Our results indicate that Southern region is indeed a significant predictor of suicidal symptoms in African American men, such that suicidal symptoms were lower in the South, but religiosity and social support did not account for this effect. Other potential mediators were also examined.     

Pragmatism and Developmentalism in Brazilian Educational Thought in the 1950s/1960

This article proposes to analyse some aspects of the appropriation of New School thinking in Brazil, particularly Deweyan pragmatism, in the 1950s and 1960s. The analysis is based on the assumption that the developmentalist ideology that punctuated the debate on the economic, political and social restructuring of the country in these two decades constituted fertile ground for the return and expansion of pragmatist thinking amongst Brazilian educators, articulating itself, sometimes in contradictory ways, with this ideology. The focus of the analysis will be on the writings of the group of educators which circulated around the figure of Anísio Teixeira, at the time director of the National Institute for Pedagogic Studies (INEP), an organ linked to the Ministry of Education and Culture (MEC), which set itself the task of producing research that would support public policy in the field of education, as well as constituting itself as a center for teacher education and the stimulus and development of innovative experiences in the public school system. The appropriation of Deweyan pragmatism, in this context, had a triple perspective: pragmatism as scientific method, implying a specific conception of science, particularly the social sciences, with emphasis on the application of scientific knowledge in the solution of practical problems; as a way of democratic life; and as a synonym for experimentalism, in the sphere of schooling.     

Vietnamese Amerasians: Predictors of Distress and Self-Destructive Behavior

There have been few empirical studies of Vietnamese Amerasians, children fathered by United States servicemen and civilians during the Vietnam War. In this study, the authors investigated pre- and postmigration variables that predict psychological distress and self-destructive behavior. The sample (N = 169) was selected from 10 cities throughout the United States. Multivariate regression analyses were used to determine the predictors of distress. Results revealed that observing traumatic events rather than actually experiencing trauma was a significant predictor of psychological distress. Participants with frequent cognitions about loss of significant people, places, or both were more likely to report psychological distress and self-destructive behavior. Implications for research and practice are discussed in relationship to cross-cultural counseling with at-risk populations, including individuals from inner cities and war-stricken environments.     

A multi-dimensional model for treating families that have survived mother assault

This paper offers a multidimensional family systems approach to treating children and their mothers in families who have survived violence and are in father-absent families. The model incorporates theoretical and clinical ideas from the child witness-to-violence field, the field of traumatic stress, and from feminist thinking. Three areas of intervention are detailed.The authors gratefully acknowledge the suggestions of the reviewers.     

Goal setting in acquisition of a volleyball skill late in motor learning

To examine the effects of different types of goal setting on motor skill acquisition during advanced stages of learning. 44 female volleyball players were tested in four experimental training groups with generic goals, specific long-term goals, specific short-term goals, and as a control group. This study's pretest, training, and retention test phases used performance of a volleyball dig/forearm pass oriented to a target. Analyses yielded no significant differences among groups, although performance increased from pre- to retention test.