小学低年级汉语儿童语言能力的发展轨迹:认知能力的预测作用

对177名小学一年级学生进行了长达一年的三次追踪,通过多层线性模型探索了儿童汉字识别、口语词汇和限时阅读理解能力的发展轨迹及复合语素意识、正字法意识和快速命名能力对三者的预测作用,结果发现：（1）三种语言能力均随时间呈现显著的线性增长趋势,汉字识别的个体差异逐渐缩小,口语词汇的个体差异相对稳定,而限时阅读理解成绩的差异逐渐扩大;（2）三种认知能力对汉字识别和限时阅读理解的初始成绩均有显著的正向预测作用,复合语素意识不仅能预测口语词汇的初始成绩,还能正向预测限时阅读理解的发展速度。     

Anticipated Regret and Time Perspective: Changing Sexual Risk-taking Behavior

In two studies we test the effects of anticipated affective reactions such as regret on behavioral expectations and behavior. These effects were examined in the context of sexual risk-taking behavior. More specifically, we tested the impact of the anticipated feelings associated with unsafe sex on sexual risk-taking behavior. We assumed a difference between the feelingsabout unsafe sex and the feelings people anticipate to haveafter this behavior. Two studies tested the hypothesis that respondents who are induced to focus on their anticipated, post-behavioral feelings are more likely to report negative feelings such as regret and to adopt safer sexual practices than respondents who are asked to focus on their feelings about the behavior itself. Study 1 shows that anticipated feelings after unsafe sex were more negative than feelings about the behavioral act itself, and that respondents who were asked to consider these anticipated feelings expressed stronger expectations to reduce their risk in future interactions. Thus, asking respondents to take a wider time perspective, and to consider the feelings they would haveafter having had unsafe sex, resulted in ‘safer’ behavioral expectations. Study 2 replicates the findings of Study 1, and also yielded a reliable effect of the time perspective manipulation on actual, self-reported behavior. Respondents who were asked to report on their anticipated feelings after unsafe sex showed less risky behavior in the five months following the experiment than the remaining respondents. Thus, the induced focus on post-behavioral emotions increased the likelihood of preventive behavior. Implications of these findings for behavioral intervention programs are discussed.