What limits tool use in nonhuman primates? Insights from tufted capuchin monkeys (Sapajus spp.) and chimpanzees (Pan troglodytes) aligning three-dimensional objects to a surface

Perceptuomotor functions that support using hand tools can be examined in other manipulation tasks, such as alignment of objects to surfaces. We examined tufted capuchin monkeys’ and chimpanzees’ performance at aligning objects to surfaces while managing one or two spatial relations to do so. We presented six subjects of each species with a single stick to place into a groove, two sticks of equal length to place into two grooves, or two sticks joined as a T to place into a T-shaped groove. Tufted capuchins and chimpanzees performed equivalently on these tasks, aligning the straight stick to within 22.5° of parallel to the groove in approximately half of their attempts to place it, and taking more attempts to place the T stick than two straight sticks. The findings provide strong evidence that tufted capuchins and chimpanzees do not reliably align even one prominent axial feature of an object to a surface, and that managing two concurrent allocentric spatial relations in an alignment problem is significantly more challenging to them than managing two sequential relations. In contrast, humans from 2 years of age display very different perceptuomotor abilities in a similar task: they align sticks to a groove reliably on each attempt, and they readily manage two allocentric spatial relations concurrently. Limitations in aligning objects and in managing two or more relations at a time significantly constrain how nonhuman primates can use hand tools.     

Early adolescents' willingness to intervene: What roles do attributions,affect, coping,and self-reported victimization play?

Limited research has sought to understand early adolescents' willingness to intervene in peer victimization as a function of their own responding to being victimized. The present study examined whether early adolescents' attributions, affect, and coping responses to a victimization vignette were related to their willingness to intervene, and whether self-reported victimization moderated the aforementioned associations. Participants were 653 5th- to 8th-grade students (50.4% girls, 58.5% Caucasian, 34.5% Hispanic) who completed a self-report survey that included a vignette asking students to imagine that they were victimized in school. Hierarchical regression analyses were conducted separately for boys and girls. Although attributions and affect showed no significant associations with students' willingness to intervene, seeking social support coping was associated with greater willingness to intervene for both boys and girls, and problem-focused coping was associated with willingness to intervene for girls only. Unexpectedly, self-reported victimization was associated positively with both boys' and girls' willingness to intervene. Findings also revealed two unexpected two-way interactions between peer victimization and boys' characterological self-blame and girls' wishful thinking coping. Overall, study findings highlight the need for future research and anti-bullying programs to address how victimization could either motivate or discourage a student's willingness to intervene.     

A Study of the Psychometric Properties of the Social Support Scale for Children

The Social Support Scale for Children (SSSC; Harter, 1985a) is one of the most commonly used measures of perceived social support and positive regard from others in children and young adolescents. Research on the validity of the SSSC, however, is limited. The current study examined the test-retest reliability, internal validity intersubscale correlations, and convergent validity of the SSSC. A confirmatory factor analysis was performed using structural equation modeling. The participants included 279 youth between the ages of 6 to 15 from three metropolitan areas in the Midwest. The results supported the reliability and validity of the SSSC. The results supported the four factor solution reported by Harter (1985a). Rewording or removal of two items is suggested.     

A Qualitative Investigation of Gang Presence and Sexual Harassment in a Middle School

Our goal with this qualitative case study was to explore the relationship between gang membership/presence of gangs in a middle school on the experiences of sexual harassment from the perspectives of both bullies and victims. This study sought to explore the characteristics of sexual harassment taking place in one middle school with a gang presence, the relationship of gang membership/presence to the types of sexual harassment experienced or witnessed, and student perceptions of the influence of gangs on sexual harassment. Thompson Middle School enrolls approximately 440 students. The surrounding community has more than 20 gangs with 2000 known gang members. Data were collected from 10 student interviews and unstructured observations from researcher field notes to capture experiences from one middle school. Analysis was performed using a modified van Kaam approach. Resulting themes centered on what students knew about sexual harassment, the types of sexual harassment they witnessed at their school, and reasons why they thought sexual harassment was occurring with such frequency. Sexual harassment appears to be heightened when there is a gang presence and visible gang activity. Incidents appear to happen more in the ‘open’ rather than hidden. The pressure to give into sexual advances by gang members appears to be especially heightened for girls. The types of sexual harassment acts described by the students as highly invasive with many classified as same-sex acts as initiated by the gang members. Sexual harassment prevention programs in schools with a gang presence need to incorporate discussions related to gang influence.     

Factor and cluster analysis of the Intermediate Halstead Category Test

The factorial invariance of the six subtests of the Intermediate version of the Halstead Category Test (IHCT), as well as clusters of IHCT subtest patterns, were evaluated in a sample of 87 children with traumatic brain injuries. A two-factor solution was found which partially replicated that found in previous research with children with learning disabilities, supporting the assumption that the IHCT measures multiple underlying constructs in clinical populations. Four clusters were found, with differences between clusters determined to a substantial extent by relative accuracy on subtest 111, and to a less substantial extent by relative accuracy on subtests IV and V. Clinical and research implications are discussed.     

SUSTAINABILITY SEEN THROUGH AN INTEGRAL LENS

The call to create a sustainable society includes many ideas that are consonant with Integral Science, including its conception of humans as part of nature, emphasis on healthy communities as fundamental building blocks, and emphasis on collaborative social organization. Integral Science expands the sustainability discussion by adding an ecological view of growth, and fractal structures to explain resilient structure. It describes the new society as a collaborative learning society that adapts appropriately to accurate signals. It also shows that the new society is already emerging.     

Improving FASD Children’s Self-Regulation: Piloting Phase 1 of the GoFAR Intervention

ABSTRACT

The initial parent training component of GoFAR, an intervention designed to improve the self-regulation and adaptive living skills of children with Fetal Alcohol Spectrum Disorders (FASDs), was piloted in a small, randomized clinical trial of 28 participants assigned to either a time-lapsed control group or one of two parent training groups who differed on whether the child’s computerized instruction was congruent or incongruent with the parent instruction. Parental compliance and achievement of therapy goals were indicators of improvement in the child’s self-regulation skills. Children who received computerized instruction consistent with the parent training demonstrated greater self-regulation improvements than those receiving incongruent computerized instruction.     

The dynamics of development on the Dimensional Change Card Sorting task

A widely used paradigm to study cognitive flexibility in preschoolers is the Dimensional Change Card Sorting (DCCS) task. The developmental dynamics of DCCS performance was studied in a cross-sectional design (N = 93, 3 to 5 years of age) using a computerized version of the standard DCCS task. A model-based analysis of the data showed that development on the DCCS task is best described as a discontinuous change in performance on the post-switch phase of the task. In addition to a perseveration group and a switch group, a transitional group that showed shifts between perseverating and switching during the post-switch trials could be distinguished. Computational models of performance and development on the DCCS task cannot, in their current forms, explain these results. We discuss how a catastrophe model of the developmental changes in task performance could be used to generate specific hypotheses about the variables that control development of DCCS performance.