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Often, the evidence we observe is consistent with more than one explanation. How do learners discriminate among candidate causes? The current studies examine whether counterfactuals help 5-year olds (N = 120) select between competing hypotheses and compares the effectiveness of these prompts to a related scaffold. In Experiment 1, counterfactuals support evidence evaluation, leading children to privilege and extend the cause that accounted for more data. In Experiment 2, the hypothesis that accounted for the most evidence was pitted against children’s prior beliefs. Children who considered alternative outcomes privileged the hypothesis that accounted for more observations, whereas those who explained relied on prior beliefs. Findings demonstrate that counterfactuals recruit attention to disambiguating evidence and outperform explanation when data contrast with existing beliefs. 相似文献
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The ability to consider multiple possibilities forms the basis for a wide variety of human-unique cognitive capacities. When does this skill develop? Previous studies have narrowly focused on children's ability to prepare for incompatible future outcomes. Here, we investigate this capacity in a causal learning context. Adults (N = 109) and 18- to 30-month olds (N = 104) observed evidence that was consistent with two hypotheses, each occupying a different level of abstraction (individual vs. relational causation). Results suggest that adults and toddlers identified multiple candidate causes for an effect, held these possibilities in mind, and flexibly applied the appropriate hypothesis to inform subsequent inferences. These findings challenge previous suggestions that the ability to consider multiple alternatives does not emerge until much later in development. 相似文献
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Children live in a world where disagreement is commonplace. Although disagreement can sometimes be explained by differences in people’s reliability, disagreement may also indicate that the referent elicits multiple perspectives. The present studies (total N = 129, 5- to 12-year-old ethnically diverse U.S. children, 42% girls) examined children’s ability to resolve disagreement among two individuals by identifying referents that integrated the perspectives, and considered the extent to which any age-related change could be explained by epistemological understanding (i.e., acknowledging that two perspectives can be right). Children’s age was positively correlated with their ability to integrate perspectives, and children performed at above-chance levels by approximately 10 years of age. Age differences in integrating perspectives were partially accounted for by epistemological understanding. 相似文献
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Desbrow B Biddulph C Devlin B Grant GD Anoopkumar-Dukie S Leveritt MD 《Journal of sports sciences》2012,30(2):115-120
This study investigated the effects of two different doses of caffeine on endurance cycle time trial performance in male athletes. Using a randomised, placebo-controlled, double-blind crossover study design, sixteen well-trained and familiarised male cyclists (Mean ± s: Age = 32.6 ± 8.3 years; Body mass = 78.5 ± 6.0 kg; Height = 180.9 ± 5.5 cm VO2(peak) = 60.4 ± 4.1 ml x kg(-1) x min(-1)) completed three experimental trials, following training and dietary standardisation. Participants ingested either a placebo, or 3 or 6 mg x kg(-1) body mass of caffeine 90 min prior to completing a set amount of work equivalent to 75% of peak sustainable power output for 60 min. Exercise performance was significantly (P < 0.05) improved with both caffeine treatments as compared to placebo (4.2% with 3 mg x kg(-1) body mass and 2.9% with 6 mg x kg(-1) body mass). The difference between the two caffeine doses was not statistically significant (P = 0.24). Caffeine ingestion at either dose resulted in significantly higher heart rate values than the placebo conditions (P < 0.05), but no statistically significant treatment effects in ratings of perceived exertion (RPE) were observed (P = 0.39). A caffeine dose of 3 mg x kg(-1) body mass appears to improve cycling performance in well-trained and familiarised athletes. Doubling the dose to 6 mg x kg(-1) body mass does not confer any additional improvements in performance. 相似文献
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The Dual Perspective Inventory was implemented to measure the diversity awareness of first‐year MSW students at a university in the western U.S. Data were collected at the beginning of the first semester from students who enrolled in a course on diversity, and again at the end of the semester when the students were about to complete the course. The mean scores of both the before and after surveys indicated that the average MSW student had an acceptable level of diversity awareness and that their awareness increased during the semester. Findings also showed that students who were racial minorities, GLBT, disabled, and/or of non‐U.S. origin had a higher level of awareness than students from the dominant culture (white heterosexual nondisabled and U.S. native) in the after survey, as well as a greater increase in awareness level over the course of the semester. 相似文献
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Adrienne O. Wente Katherine Kimura Caren M. Walker Nirajana Banerjee María Fernández Flecha Bridget MacDonald Christopher Lucas Alison Gopnik 《Child development》2019,90(3):859-875
Extensive research has explored the ability of young children to learn about the causal structure of the world from patterns of evidence. These studies, however, have been conducted with middle-class samples from North America and Europe. In the present study, low-income Peruvian 4- and 5-year-olds and adults, low-income U.S. 4- and 5-year-olds in Head Start programs, and middle-class children from the United States participated in a causal learning task (N = 435). Consistent with previous studies, children learned both specific causal relations and more abstract causal principles across culture and socioeconomic status (SES). The Peruvian children and adults generally performed like middle-class U.S. children and adults, but the low-SES U.S. children showed some differences. 相似文献
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Learning to Learn From Stories: Children's Developing Sensitivity to the Causal Structure of Fictional Worlds 
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下载免费PDF全文 Fiction presents a unique challenge to the developing child, in that children must learn when to generalize information from stories to the real world. This study examines how children acquire causal knowledge from storybooks, and whether children are sensitive to how closely the fictional world resembles reality. Preschoolers (N = 108) listened to stories in which a novel causal relation was embedded within realistic or fantastical contexts. Results indicate that by at least 3 years of age, children are sensitive to the underlying causal structure of the story: Children are more likely to generalize content if the fictional world is similar to reality. Additionally, children become better able at discriminating between realistic and fantastical story contexts between 3 and 5 years of age. 相似文献
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Caren S. Martin 《Journal of Research in Special Educational Needs》2016,16(4):280-298
In 2010, the Centers for Disease Control (CDC) reported a 1600% increase in the number of individuals between the ages of 6 and 22 years with autism spectrum disorder (ASD). Knowledge about educational interventions for children with ASD is substantial; however, less is known about the design of supportive classroom environments where they learn. ASD experts believe that the early years in school, namely preschool through 6th grade, are critical in reaching children and establishing a foundation for their life‐long learning and general well‐being. In context of the human ecosystem theory that models the interaction between people and the natural, social and designed environments, this literature review of refereed sources (2000–2012) documented findings about interventions, that is, design criteria (DC) for incorporation into the physical classroom environment used by children with ASD. The majority of the studies was exploratory and presented DC that subsequently were not tested. Due to research method and/or sampling design, efficacy, reliability and validity of findings varied. Limited research (19 articles, 1 conference proceeding) addressing classroom DC leaves designers, teachers and school administrators substantially reliant on anecdotal information in terms of creating optimal learning environments to support inclusion of children with ASD. Additional research is needed to examine this critical design/human behaviour relationship via identification of evidence‐based DC to guide classroom design solutions that support learning by children with ASD. 相似文献
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The literature on family behavior in informal science settings consists primarily of observational studies of behavior, focusing on generation and gender roles and learning strategies. Much effort has been expended studying the family visit, building the foundation for further study. A question that remains is: Can we infer learning from observations of learning behavior among family members? The literature in this annotated bibliography addresses issues involved in understanding the family learning process — what a family is, why families visit museums, how they behave in museums, how they learn in museums, and measuring learning. 相似文献