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The aim was to examine cross-cultural variation in linguistic responsiveness to young children in 10 English-speaking mother–child dyads and 10 Italian-speaking mother– child dyads. All 20 children were late talkers who possessed delays in expressive vocabulary development but age-appropriate cognitive and receptive language skills. Dyads were filmed in 15 minute free play contexts, which were transcribed and coded for measures of maternal linguistic input (e.g. rate, MLU, labels, expansions) and child language productivity (e.g. utterances, different words used). The results revealed that the Italian mothers used more utterances, spoke more quickly and used a more diverse vocabulary than the Canadian mothers. The Italian children mirrored their mothers and also used more utterances and a more diverse vocabulary than the Canadian children. Mothers in both groups used similar percentages of responsive labels and expansions. However, Italian mothers responded to fewer of their children's vocalisations, using a smaller percentage of imitations and interpretations than the Canadian mothers. Correlations between maternal input and children's language productivity revealed that contingent language measures (e.g. imitations, interpretations, expansions) were related to high levels of productivity in children in both cultural groups. The results support the use of language interventions based on increasing maternal responsiveness for these children at the one-word stage of language development. They also point to differences that may be culturally based. For example, Italian mothers use faster rates of interaction and appear to have higher expectations for their children's verbal participation in interaction. This is reflected in higher rates of language production from their children, even though children in both cultural groups have similar vocabulary sizes.  相似文献   
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The emerging political consciousness of the Russian people isanalyzed against a background of severe constraints in the Sovietera on public opinion formation. Problems in the transitionto democracy and representative government are reflected inheightened interest in politics, volatile levels of confidencein key political institutions, and deep uncertainty about thefuture in both economic and political terms.  相似文献   
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This study explored the extent to which students' thoughts, feelings, and actions are associated with the nature of an online course and how that course relates to them personally. Following completion of an online course in aviation physiology, service academy undergraduates (N = 481) completed a survey that assessed several motivational, emotional, and behavioral outcomes. Consistent with expectations, results from a logistic regression analysis revealed that students who said they were planning to become aviators upon graduation were more likely to report greater perceptions of task value and greater use of metacognitive control strategies than their non-aviator counterparts. On the other hand, after controlling for the other variables in the model, aviators were actually less likely to report being satisfied with the online course, an unexpected finding. Taken together, these results partially substantiate the social cognitive notion that subjective perceptions of the learning environment ultimately shape students' motivational and behavioral engagement in that environment. Implications for the theory and research of online learning are discussed.  相似文献   
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