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Caroline K. Pemberton Roben Anneliese J. Bass Ginger A. Moore Laura Murray‐Kolb Patricia Z. Tan Rick O. Gilmore Kristin A. Buss Pamela M. Cole Laureen O. Teti 《Infancy》2012,17(5):558-577
Infants’ emerging ability to move independently by crawling is associated with changes in multiple domains, including an increase in expressions of anger in situations that block infants’ goals, but it is unknown whether increased anger is specifically because of experience with being able to move autonomously or simply related to age. To examine the influence of locomotion on developmental change in anger, infants’ (N = 20) anger expressions during an arm restraint procedure were observed longitudinally at a precrawling baseline assessment and 2 and 6 weeks after the onset of crawling. Infant age at each crawling stage was unrelated to the frequency of anger expressed in response to arm restraint. At 6 weeks postcrawling onset, infants whose mothers rated them as temperamentally higher in distress to limitations, compared with those rated lower, showed a greater increase in the frequency of anger expressed during the arm restraint relative to earlier assessments and took longer to reduce the frequency of anger expressed when no longer restrained. Findings suggest that experience with autonomous crawling has an effect on anger expression, independent of age, and that a temperamental tendency to become distressed by limitations may exacerbate the effect of crawling on anger expression. 相似文献
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Richard A. Lockhart John J. Spinelli Michael A. Stephens 《Revue canadienne de statistique》2007,35(1):125-133
Choulakian, Lockhart & Stephens (1994) proposed Cramér‐von Mises statistics for testing fit to a fully specified discrete distribution. The authors give slightly modified definitions for these statistics and determine their asymptotic behaviour in the case when unknown parameters in the distribution must be estimated from the sample data. They also present two examples of applications. 相似文献
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Ginger Jacobson 《Sociological Forum》2015,30(3):832-851
This work contributes empirical research to racial formation theory (RFT) and systemic racism (SR), demonstrating how these theories complement each other. There are few practical applications of these theories. This research examines RFT and SR from the perspective of hip‐hop fans. I qualitatively examine how 23 nonblack women articulate the relationships of race, class, and gender through discussion of hip‐hop music and videos that accompany it. Findings suggest that hip‐hop is a site of racial formation. Participants spoke from a color‐blind perspective and white racial frame so that they perpetuated ideals of systemic racism theory. 相似文献
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In this paper the problem of computingp-values for the asymptotic distribution of certain goodness-of-fit test statistics based on the empirical distribution is approached via quadrature. Through examples it is shown that this approach can lead to considerable time savings over the standard practice of discretizing the underlying eigenvalue problem. 相似文献
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Joan Del Castillo Jalila Daoudi Richard Lockhart 《Scandinavian Journal of Statistics》2014,41(2):382-393
Two methods to distinguish between polynomial and exponential tails are introduced. The methods are based on the properties of the residual coefficient of variation for the exponential and non‐exponential distributions. A graphical method, called a CV‐plot, shows departures from exponentiality in the tails. The plot is applied to the daily log‐returns of exchange rates of US dollar and Japanese yen. New statistics are introduced for testing the exponentiality of tails using multiple thresholds. They give better control of the significance level than previous tests. The powers of the new tests are compared with those of some others for various sample sizes. 相似文献
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Due to growing work-family demands, supervisors need to effectively exhibit family supportive supervisor behaviors (FSSB). Drawing on social support theory and using data from two samples of lower wage workers, the authors develop and validate a measure of FSSB, defined as behaviors exhibited by supervisors that are supportive of families. FSSB is conceptualized as a multidimensional superordinate construct with four subordinate dimensions: emotional support, instrumental support, role modeling behaviors, and creative work-family management. Results from multilevel confirmatory factor analyses and multilevel regression analyses provide evidence of construct, criterion-related, and incremental validity. The authors found FSSB to be significantly related to work-family conflict, work-family positive spillover, job satisfaction, and turnover intentions over and above measures of general supervisor support. 相似文献