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51.
本文对华东南(台湾,广东,海南)产的广东苏铁、台东苏铁及海南苏铁的形态学、解剖学和分类学问题、以及这几种苏铁的亲缘关系进行了讨论。本文附有检索表及图。  相似文献   
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A longitudinal model of parent academic involvement, behavioral problems, achievement, and aspirations was examined for 463 adolescents, followed from 7th (approximately 12 years old) through 11th (approximately 16 years old) grades. Parent academic involvement in 7th grade was negatively related to 8th-grade behavioral problems and positively related to 11th-grade aspirations. There were variations across parental education levels and ethnicity: Among the higher parental education group, parent academic involvement was related to fewer behavioral problems, which were related to achievement and then aspirations. For the lower parental education group, parent academic involvement was related to aspirations but not to behavior or achievement. Parent academic involvement was positively related to achievement for African Americans but not for European Americans. Parent academic involvement may be interpreted differently and serve different purposes across sociodemographic backgrounds.  相似文献   
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The extent to which current theories on family-related factors associated with children's depression and conduct problems are applicable to Mexican American children was examined among demographically comparable samples of low-income Mexican American (English and Spanish speaking) and Euro-American mothers and children. There were ethnic differences in mean levels of children's depression, maternal inconsistent discipline, and hostile control. In addition, there were differences across language within the Mexican American sample on levels of reported maternal inconsistent discipline and hostile control. The vast majority of relations between parenting and mental health were similar between Mexican Americans and Euro-Americans, suggesting that current theories do apply across ethnic groups. However, analyses across language within the Mexican American sample showed that language preference moderated the relation between maternal acceptance and children's conduct problems. Moreover, the relation between acceptance and hostile control differed across groups. These results are discussed in light of the relative influence of ethnicity and other contextual variables on parenting and children's mental health.  相似文献   
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Promoting mental health and well-being for children and young people in the UK has attracted increasing prominence in recent years and has been a focus for government strategy within health and education. Training and practice in educational psychology has increasingly focused on developing skills and expertise to provide therapeutic support within school contexts, at an early stage of need. One approach, Cognitive Behaviour Therapy (CBT), has been heralded as an effective, evidence-based intervention for anxiety. This research examines the factors influencing the outcomes of a group CBT-based intervention, run by an Educational Psychologist (EP), in a school setting. The findings suggest that influential variables included pupil identification, measures of change applied and the role of school staff. It is concluded that EPs can play a key role in increasing access to psychological therapies, alongside considering due caution in relation to the application of traditional clinical approaches in school contexts.  相似文献   
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