How New Caledonian crows solve novel foraging problems and what it means for cumulative culture     

Corina J. Logan  Alexis J. Breen  Alex H. Taylor  Russell D. Gray  William J. E. Hoppitt 《Learning & behavior》2016,44(1):18-28

New Caledonian crows make and use tools, and tool types vary over geographic landscapes. Social learning may explain the variation in tool design, but it is unknown to what degree social learning accounts for the maintenance of these designs. Indeed, little is known about the mechanisms these crows use to obtain information from others, despite the question’s importance in understanding whether tool behavior is transmitted via social, genetic, or environmental means. For social transmission to account for tool-type variation, copying must utilize a mechanism that is action specific (e.g., pushing left vs. right) as well as context specific (e.g., pushing a particular object vs. any object). To determine whether crows can copy a demonstrator’s actions as well as the contexts in which they occur, we conducted a diffusion experiment using a novel foraging task. We used a nontool task to eliminate any confounds introduced by individual differences in their prior tool experience. Two groups had demonstrators (trained in isolation on different options of a four-option task, including a two-action option) and one group did not. We found that crows socially learn about context: After observers see a demonstrator interact with the task, they are more likely to interact with the same parts of the task. In contrast, observers did not copy the demonstrator’s specific actions. Our results suggest it is unlikely that observing tool-making behavior transmits tool types. We suggest it is possible that tool types are transmitted when crows copy the physical form of the tools they encounter.  相似文献   

Narrative Knowing and Learning Introduction to Part I     

William L. Randall  L. Dolores Furlong 《Interchange》2007,38(3):207-212

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2. Dirk Matejovski (Hrsg.): Neue,schöne Welt? Lebensformen der Informationsgesellschaft     

Claus J. Tully  Dirk Baier 《Zeitschrift für Erziehungswissenschaft》2003,6(2):301-303

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The effect of language specific factors on early written composition: the role of spelling,oral language and text generation skills in a shallow orthography     

Barbara Arfé  Julie E. Dockrell  Bianca De Bernardi 《Reading and writing》2016,29(3):501-527

Spelling skills have been identified as one of the major barriers to written text production in young English writers. By contrast oral language skills and text generation have been found to be less influential in the texts produced by beginning writers. To date, our understanding of the role of spelling skills in transparent orthographies is limited. The current study addressed this gap by examining the contribution of spelling, oral language and text generation skills in written text production in Italian beginner writers. Eighty-three children aged 7–8 years participated in the study. Spelling, lexical retrieval, receptive grammar, and written sentence generation and reformulation skills were assessed and children were asked to write a text on a set topic. A factor analysis revealed that the children’s written text production was captured by three factors: productivity, complexity and accuracy. In contrast to results from children learning to write in opaque orthographies, such as English, this study showed that receptive grammar and written sentence generation skills accounted for significant variance in measures of productivity, complexity and accuracy in Italian children’s written text production. Spelling skills contributed to text accuracy and quality and explained more variance than receptive grammar in microstructural accuracy. By contrast, oral grammatical skills explained more variance in text quality than spelling. The current study shows the differential impact of language systems, such as Italian, on written text production. Implications for assessment and instruction are outlined.  相似文献   

Improving Inquiry Teaching through Reflection on Practice     

Christine R. Lotter  Cory Miller 《Research in Science Education》2017,47(4):913-942

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Noise assisted directed motion at the molecular level — 2     

Mangal C. Mahato  A. M. Jayannavar 《Resonance》2003,8(9):4-13

The term noise is used to describe fluctuations about the mean deterministic stationary value of a physical quantity. It is now being increasingly realised that noise is an important ingredient to bring order in dynamical processes. Though it appears counterintuitive, noise seems to help in directing transport processes in biological systems at the molecular level. In Part 2 of the article, we discuss some more examples of noise assisted directed motion.  相似文献   

Predictors of College Attendance Patterns of Rural Youth     

Soo-yong Byun  Judith L. Meece  Charlotte A. Agger 《Research in higher education》2017,58(8):817-842

This study investigated patterns of college attendance using data from a nationwide and contemporary sample of 2112 rural youth. We found that more than half of rural youth attended two-year institutions at some point during their college career and about a fourth initially enrolled in a two-year college before enrolling in a four-year college. Results also revealed that parental education, college preparatory track and preparation experiences, and teacher expectations predicted students’ college attendance patterns. Our findings point to the importance of two-year colleges and highlight the influence of family characteristics and students’ schooling experiences in the postsecondary trajectories of rural youth.  相似文献   

Context modulation of learned attention deployment     

Metin Uengoer  John M. Pearce  Harald Lachnit  Stephan Koenig 《Learning & behavior》2018,46(1):23-37

In three experiments, we investigated the contextual control of attention in human discrimination learning. In each experiment, participants initially received discrimination training in which the cues from Dimension A were relevant in Context 1 but irrelevant in Context 2, whereas the cues from Dimension B were irrelevant in Context 1 but relevant in Context 2. In Experiment 1, the same cues from each dimension were used in Contexts 1 and 2, whereas in Experiments 2 and 3, the cues from each dimension were changed across contexts. In each experiment, participants were subsequently shifted to a transfer discrimination involving novel cues from either dimension, to assess the contextual control of attention. In Experiment 1, measures of eye gaze during the transfer discrimination revealed that Dimension A received more attention than Dimension B in Context 1, whereas the reverse occurred in Context 2. Corresponding results indicating the contextual control of attention were found in Experiments 2 and 3, in which we used the speed of learning (associability) as an indirect marker of learned attentional changes. Implications of our results for current theories of learning and attention are discussed.  相似文献   

An Investigation of How Culture Shapes Curriculum in Early Care and Education Programs on a Native American Indian Reservation     

Jennifer L. Gilliard  Rita A. Moore 《Early Childhood Education Journal》2007,34(4):251-258

This article investigates how culture shapes instruction in three early care and education programs on the Flathead Indian Reservation. Interviews with eight early childhood teachers as well as classroom observations were conducted. The investigation is framed by the following research question: How does the culture of the family and community shape curriculum? Data analysis suggested that ongoing communication with parents and community about teaching within a culturally relevant context, building a sense of belongingness and community through ritual, and respecting children, families, and community were essential to defining the Native American Indian culture within these early learning programs.  相似文献   

The use of growth-groups as a critical ingredient in counselor training     

Kathleen Y. Ritter 《International journal for the advancement of counseling》1978,1(3):295-302

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