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The standard approach to inventory policy ignores the effect of inflation. This paper investigates a model that includes both inflationary trends and time discounting. The paper compares this model with the standard EOQ model and the analysis for a one-time change, found in previous literature. 相似文献
233.
Recognizing similarity between one's own and others' actions is important for identifying others with whom to affiliate and from whom to learn. In this study, 40 19‐month‐old toddlers recognized when a puppet chose the same toys as them. Toddlers preferred to affiliate with a puppet who chose the same toys as themselves relative to a puppet who chose other toys and they modified their subsequent behavior by choosing the same toys as that puppet when presented with novel toys. Toddlers' actions were not based on perceivable features of the puppet (e.g., similar accent or language as oneself) or an association between the puppet and the preferred toys (as assessed in a control condition). Results indicate that toddlers identified and recognized the similarity in action choices between themselves and the puppet via comparison between their own and the puppets' actions. Identifying this similarity is critical for children's developing understanding of and engagement in interactions with others. 相似文献
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AbstractThe formation of an adoption information gap was examined for a group of 169 emerging adults (M?=?25.0?years) who were adopted as infants. Participants completed interviews and questionnaires at adolescence and emerging adulthood (late teens to 20s). The Adoption Curiosity Pathway model guided research questions about formation of an adoption information gap, which exists when there is a difference between what an adopted person knows and what he or she desires to know regarding his or her adoption. In addition, specific issues were identified about which emerging adults were curious. Differences in these specific issues were examined across gender and openness arrangement with birth parents at emerging adulthood. The most frequently sought information was medical and health history. Logistic regression analyses revealed that the formation of an adoption information gap, which contains the specific items of curiosity, was more likely for those who were less satisfied with the amount of openness with birth parents during both adolescence and emerging adulthood. Implications for practice are presented. 相似文献
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Traditional inference methodology in order restricted models oftentimes yields procedures with unexpected properties. There are many scattered results exhibiting anomalies and there is disagreement on which inference procedures are appropriate in particular specific models. The authors contend here that these anomalies are not surprising and are to be expected. They air some of the issues that arise in an effort to shed some light on these problems. 相似文献
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Katherine H. Shelton Gordon T. Harold Marcie C. Goeke-Morey E. Mark Cummings 《Social Development》2006,15(2):232-247
This study compared boys’ and girls’ coping responses to videotaped representations of marital conflict that varied in conflict content, tactic, and the gender of the parent engaging in conflict behaviour. Participants were 398 children (208 boys, 190 girls) aged 12–13 years old living in the United Kingdom. Child‐related conflict exchanges characterized by hostile behaviour (e.g., physical aggression) elicited greater mediation efforts by children. Children were more likely to mediate father‐enacted conflict. Girls, relative to boys, endorsed more mediation to fathers’ physical aggression and mothers’ pursuit of an issue and were more avoiding of mothers’ physical aggression and threats to intactness of the family. Findings underscore the importance of considering parent and child gender in determining children’s coping efforts in the context of interparental conflict. 相似文献
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Judith A. Levine Clifton R. Emery Harold Pollack 《Journal of marriage and the family》2007,69(1):105-122
Children born to early child bearers are more likely than other children to display problem behaviors or poor academic performance, but it is unclear whether early childbearing plays a causal role in these outcomes. Using multiple techniques to control for background factors, we analyze 2,908 young children and 1,736 adolescents and young adults in the National Longitudinal Survey of Youth (NLSY79) and the NLSY79 Children and Young Adults (CNLSY79) data sets to examine whether early childbearing causes children’s outcomes. We find evidence that teen childbearing plays no causal role in children’s test scores and in some behavioral outcomes of adolescents. For other behavioral outcomes, we find that different methodologies produce differing results. We thus suggest caution in drawing conclusions about early parenthood’s overarching effect. 相似文献
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