聋生青春期生理发育和心理发展现状调查

本研究对上海市聋哑学校的部分12～19岁共92名聋生进行了生理发育和心理发展的调查研究,结果显示聋生青春期性生理发育的年龄与正常学生基本相同,男生首次遗精的平均年龄为13岁,女生月经初潮的平均年龄为12.6岁;大部分聋生都认为性生理上出现的一些变化如男生首次遗精、女生月经初潮以及出现第二性征是正常现象;青春期聋生已经对男、女性别角色形成了较为固定的看法,已经能对男,女性别以及男、女应具备的气质进行区分;多数聋生偏向与自己同性别的聋生交往,而比较疏远和回避异性聋生。     

Agreement in activity energy expenditure assessed by accelerometer and self-report in adolescents: Variation by sex,age, and weight status

Abstract

The agreement between self-reported and objective estimates of activity energy expenditure was evaluated in adolescents by age, sex, and weight status. Altogether, 403 participants (217 females, 186 males) aged 13–16 years completed a 3-day physical activity diary and wore a GT1M accelerometer on the same days. Partial correlations (controlling for body mass) were used to determine associations between estimated activity energy expenditure (kcal · min^?1) from the diary and accelerometry. Differences in the magnitude of the correlations were examined using Fisher's r to z transformations. Bland–Altman procedures were used to determine concordance between the self-reported and objective estimates. Partial correlations between assessments of activity energy expenditure (kcal · min^?1) did not differ significantly by age (13–14 years: r = 0.41; 15–16 years: r = 0.42) or weight status (normal weight: r = 0.42; overweight: r = 0.39). The magnitude of the association was significantly affected by sex (Δr = 0.11; P < 0.05). The agreement was significantly higher in males than in females. The relationship between activity energy expenditure assessed by the objective method and the 3-day diary was moderate (controlling for weight, correlations ranged between 0.33 and 0.44). However, the 3-day diary revealed less agreement in specific group analyses; it markedly underestimated activity energy expenditure in overweight/obese and older adolescents. The assessment of activity energy expenditure is complex and may require a combination of methods.     

Weekday and weekend physical activity patterns of French and Spanish adolescents

Abstract

Adolescents' objectively assessed physical activity (PA) patterns during specific segments of the day remain unclear. In order to develop a clearer understanding this study examined country and gender differences in moderate to vigorous physical activity (MVPA) levels during specific segments of weekdays and weekend days, and explored the contribution of each segment to PA guidelines. Morpho-demographic, socio-economic and PA data were collected from a sample of 829 French and Spanish adolescents (45.0% Spanish; 55.2% females; 14.33±.73 years). Actigraph GT3X accelerometers were worn for seven days to assess adolescents' MVPA for three segments of weekdays (school-travel-time, school-time, and non-school-time), and weekend days (morning-time, afternoon-time and night-time). Data were analysed using multilevel modelling. The most active segments were non-school-time (29.2±17.5 min) and school-time (25.8±14.2 min) during weekdays, and morning-time (28.2±25.8 min) on weekend days. Except for school-time, Spanish adolescents were more significantly active than French adolescents during all segments. Significant gender differences were found in all segments. Country differences highlight the need to recognise cultural contexts that influence adolescents' PA. Common European-wide strategies may be insufficient to increase MVPA levels if cultural variability is not considered. Spanish and French PA intervention programmes should target girls and low-active boys during non-school-time and weekends.     

The Relationship of Gender and Academic Performance to Motivation: Within-Ethnic-Group Variations

In contemporary psychology more within-group examinations of psychological phenomena are needed, especially in ethnic minority populations. This paper presents the findings of three separate studies of the relationship of GPA and gender to motivation, all of which are within ethnic group comparisons. One study is conducted with African-Americans, the second with Hispanic-Americans, and the third with Euro-Americans. The instruments used are the Assessment of Academic Self-Concept and Motivation and Assessment of Personal Agency Beliefs. Both measures provide a goal-focused, multidimensional, and comprehensive assessment of motivation. MANOVAs and subsequent ANOVAs are presented for each ethnic group. The findings reveal significant within-group differences that also vary from one ethnic group to another.     

营造青少年成长的良好道德环境

青少年时期是世界观、人生观、价值观及道德品质形成和发展的关键时期,加强对青少年的道德教育,提高他们的思想道德素质,具有重要的战略意义。而良好的道德环境则是青少年健康成长的必要条件。为此,家庭、学校和社会这三方面必须密切配合,共同担负起培养年轻一代的任务。     

Writing in Early Adolescence: A Review of the Role of Self-Efficacy Beliefs

This review examines and summarizes 16 research studies examining the writing self-efficacy beliefs of 6th- to 10th-grade students. In the majority of the studies, self-efficacy was found to play a primary role in predicting student writing performance. Students with learning disabilities were found to over-estimate their ability to complete specific writing tasks. Several studies found gender differences, with boys rating their confidence higher than girls, although actual performance did not differ. Grade-level differences in perceived efficacy for writing were found in some studies, but not in others. Most studies emphasized that those working with young adolescents need to be aware of the importance of self-efficacy and other motivational beliefs in conjunction with academic functioning. Difficulties with specificity of self-efficacy measures, and with correspondence between measure and criterial task were found in several studies. The article concludes with suggestions for future self-efficacy research.     

Predicting bullying: maladjustment,social skills and popularity

In order to prevent bullying, research has characterised the adolescents involved in terms of their social skills, maladjustment and popularity. However, there is a lack of knowledge concerning the relationships between these variables and how these relationships predict bullying involvement. Moreover, the literature has focused on pure bullies and victims, despite the fact that bully-victims are known to be the most troubled. The aim of this work is to study the relationships between these variables and their predictive value, focusing on the bully-victim role. The sample (N?=?641) is made up of adolescents aged between 12 and 17?years. The results mainly indicate that the level of maladjustment and social skills predicts sociometric popularity, which is a significant predictor of bullying involvement. Differences in the social roles were observed, suggesting that social skills and maladjustment serve a different purpose for bully-victims than for the other roles involved.     

人类学视野的青春期少女反抗理论启示

青少年生理心理发展到青春期(11、12岁至17、18岁),生理身体表现出一系列巨大变化,心理行为表现出一系列新特点,心理学家、教育学家称为过度期、叛逆期、反抗期、急风暴雨期、青春骚动期、危机期、转折期、心理断乳期,普遍归因于身体发育的自然成熟。但社会生物学、人类学家则认为,在动物进化过程中,为了种族发展形成许多禁忌,特别是乱伦禁忌,后来这些禁忌本能化和习俗化。习俗之一就是换群。人类和他的祖先猴子、猩猩一样,是女性换群。经过漫长的进化,少女就形成了集体潜意识的青春期换群冲动,到了青春期就反抗家庭父母,极力在外寻找其他家庭(群体)的接纳。这种集体潜意识的换群冲动是青春期少女心理反抗的社会生物学根源。也就是说,生物的性成熟、进化的换群冲动、文化的性约束共同造成了反抗。     

Rites of passage： A comparison of US,Malaysian and Brazilian adolescents

This study compares the life events perceived as ＂rites of passage＂ from adolescence to adulthood by respondents between the ages of 14 and 23 in 3 countries and discusses the possible influences of culture and globalization on these perceptions. Participants include： （1） 250 adolescents from the US （125 males and 125 females）; （2） 191 adolescents from southeastern Brazil （70 males and 121 females）; and （3） 163 adolescents from Malaysia （76 males and 87 females）. These adolescents ranked a variety of life events which may be perceived as indicative of adult status by completing a questionnaire about perceived rites of passage. Although there were similarities among the 3 groups, several differences also emerged. The most commonly noted indicator of adult status for Malaysian youth was physical maturity, followed by completing one＇s education. Participants from the US cited financial independence as the major indicator of adult status, while those from Brazil cited the ability to make important decisions independently from family and to take responsibility for others, such as children, aging parents or a spouse. Brazilian youth were significantly more likely to cite a love affair and voting in major elections as rites of passage than were participants from the other 2 countries. Participants from the US were significantly more likely to cite military service, and Malaysian youth were significantly more likely to consider completion of education and achieving physical maturity as rites of passage. Gender and age differences within groups were evident on some items, but these were not consistent across groups. Possible explanations for the differences between countries and implications for educators working with adolescents in rapidly changing societies are discussed.     

Prospective bi-directional associations between sedentary time and physical activity with cognitive performance: a cohort study

This prospective study determined whether: (1) objective physical activity (PA) and sedentary (SED) time at 9 years was associated with cognition at 15 years, (2) cognition at 9 years was associated with PA and SED at 15 years, and (3) the change in PA and SED from 9 to 15 years was associated with the change in cognition. Cognitive performance was assessed from picture vocabulary, verbal analogy, passage comprehension, and applied problem tasks. Regression models were used to explore each aim while adjusting for covariates. Among the combined sample, SED (min· day^?1) at 9 years was unrelated with cognitive performance at 15 years, whereas participating in ≥ 60 min· day^?1 of moderate-to-vigorous PA (MVPA) at 9 years predicted lower cognitive scores at 15 years. In the reverse direction, cognitive performance at 9 years was unrelated with SED and MVPA (min· day^?1) at 15 years. Over 6 years, increased SED (min· day^?1) predicted lower improvement to verbal analogy scores (B = ?0.01, p = 0.028). In comparison, an increase (or relatively smaller decline) in MVPA (min· day^?1) predicted greater improvement in applied problem scores (B = 0.06, p = 0.007). Contextual information regarding SED and MVPA behavior would help understand bi-directional associations of activity and cognition.