Family Involvement in the Schools of Belize

This study was conducted to better understand the level of involvement of families in Belize with the education of their children. It was anticipated that information from this broadly distributed survey might show areas of current strengths and weakness in the current system that might allow for future adjustments

Teacher Support as a Moderator of Behavioral Outcomes for Youth Exposed to Stressful Life Events

The present study examined the relationship between teacher support, life stress, and behavioral outcomes in 103 youth. Participants completed questionnaires regarding life events, social support, personality, and behavior. Moderated regression analyses were conducted using youth perceptions of teacher support and negative life events to predict externalizing and internalizing problems. Results revealed a significant interaction between teacher support and life stress, indicating teacher support successfully moderated the effect of stress on externalizing problems. Main effects for life stress were consistent with previous literature suggesting that higher amounts of stress predict greater externalizing and internalizing problems. Implications for teacher support are discussed

Teacher Support as a Moderator of Behavioral Outcomes for Youth Exposed to Stressful Life Events

The present study examined the relationship between teacher support, life stress, and behavioral outcomes in 103 youth. Participants completed questionnaires regarding life events, social support, personality, and behavior. Moderated regression analyses were conducted using youth perceptions of teacher support and negative life events to predict externalizing and internalizing problems. Results revealed a significant interaction between teacher support and life stress, indicating teacher support successfully moderated the effect of stress on externalizing problems. Main effects for life stress were consistent with previous literature suggesting that higher amounts of stress predict greater externalizing and internalizing problems. Implications for teacher support are discussed

Validation Study of the Family Involvement Questionnaire–Elementary Version With Families in Belize

The purpose of this study was to examine the factor structure of the Family Involvement Questionnaire–Elementary Version with families in Belize. Participants were 185 primary caregivers of children in primary education settings in Belize. Caregivers were given the Family Involvement Questionnaire–Elementary Version to measure their educational involvement in their children’s schooling. Findings indicated the factor structure of the Family Involvement Questionnaire–Elementary Version in Belize was not congruent with the factor structures with samples from the United States and New Zealand. Exploratory factor analysis suggested a five-factor solution: (a) home-school communication, (b) home expectations and monitoring, (c) educational support, (d) school and community involvement, and (e) school attendance. In light of similar measurement studies in the literature, these data indicate that family educational involvement varies across geographic and cultural contexts. This suggests that interventions and policies to improve education outcomes via family involvement ought to consider the unique structure of families’ involvement in the educational system

Validation Study of the Family Involvement Questionnaire--Elementary Version with Families in Belize

The purpose of this study was to examine the factor structure of the Family Involvement Questionnaire--Elementary Version with families in Belize. Participants were 185 primary caregivers of children in primary education settings in Belize. Caregivers were given the Family Involvement Questionnaire--Elementary Version to measure their educational involvement in their children\u27s schooling. Findings indicated the factor structure of the Family Involvement Questionnaire--Elementary Version in Belize was not congruent with the factor structures with samples from the U.S. and New Zealand. Exploratory factor analysis suggested a five-factor solution: (a) home-school communication, (b) home expectations and monitoring, (c) educational support, (d) school and community involvement, and (e) school attendance. In light of similar measurement studies in the literature, these data indicate that family educational involvement varies across geographic and cultural contexts. This suggests that interventions and policies to improve education outcomes via family involvement ought to consider the unique structure of families\u27 involvement in the educational system. [This is the online first version of an article published in Assessment for Effective Intervention

\u3ci\u3eDrosophila\u3c/i\u3e Muller F Elements Maintain a Distinct Set of Genomic Properties Over 40 Million Years of Evolution

The Muller F element (4.2 Mb, ~80 protein-coding genes) is an unusual autosome of Drosophila melanogaster; it is mostly heterochromatic with a low recombination rate. To investigate how these properties impact the evolution of repeats and genes, we manually improved the sequence and annotated the genes on the D. erecta, D. mojavensis, and D. grimshawi F elements and euchromatic domains from the Muller D element. We find that F elements have greater transposon density (25–50%) than euchromatic reference regions (3–11%). Among the F elements, D. grimshawi has the lowest transposon density (particularly DINE-1: 2% vs. 11–27%). F element genes have larger coding spans, more coding exons, larger introns, and lower codon bias. Comparison of the Effective Number of Codons with the Codon Adaptation Index shows that, in contrast to the other species, codon bias in D. grimshawi F element genes can be attributed primarily to selection instead of mutational biases, suggesting that density and types of transposons affect the degree of local heterochromatin formation. F element genes have lower estimated DNA melting temperatures than D element genes, potentially facilitating transcription through heterochromatin. Most F element genes (~90%) have remained on that element, but the F element has smaller syntenic blocks than genome averages (3.4–3.6 vs. 8.4–8.8 genes per block), indicating greater rates of inversion despite lower rates of recombination. Overall, the F element has maintained characteristics that are distinct from other autosomes in the Drosophila lineage, illuminating the constraints imposed by a heterochromatic milieu

Retrotransposons Are the Major Contributors to the Expansion of the Drosophila ananassae Muller F Element

The discordance between genome size and the complexity of eukaryotes can partly be attributed to differences in repeat density. The Muller F element (∼5.2 Mb) is the smallest chromosome in Drosophila melanogaster, but it is substantially larger (>18.7 Mb) in D. ananassae. To identify the major contributors to the expansion of the F element and to assess their impact, we improved the genome sequence and annotated the genes in a 1.4-Mb region of the D. ananassae F element, and a 1.7-Mb region from the D element for comparison. We find that transposons (particularly LTR and LINE retrotransposons) are major contributors to this expansion (78.6%), while Wolbachia sequences integrated into the D. ananassae genome are minor contributors (0.02%). Both D. melanogaster and D. ananassae F-element genes exhibit distinct characteristics compared to D-element genes (e.g., larger coding spans, larger introns, more coding exons, and lower codon bias), but these differences are exaggerated in D. ananassae. Compared to D. melanogaster, the codon bias observed in D. ananassae F-element genes can primarily be attributed to mutational biases instead of selection. The 5′ ends of F-element genes in both species are enriched in dimethylation of lysine 4 on histone 3 (H3K4me2), while the coding spans are enriched in H3K9me2. Despite differences in repeat density and gene characteristics, D. ananassae F-element genes show a similar range of expression levels compared to genes in euchromatic domains. This study improves our understanding of how transposons can affect genome size and how genes can function within highly repetitive domains