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101.
Irene Tung Amanda N. Noroa Julia E. Morgan Barbara Caplan Steve S. Lee Bruce L. Baker 《Journal of research on adolescence》2019,29(1):225-239
Although parenting behavior and friendship quality predict adolescent externalizing behaviors (EBs), individual differences in temperament may differentially affect susceptibility to these factors over time. In a multi‐method and multi‐informant study of 141 children followed prospectively from toddlerhood to adolescence, we tested the independent and interactive associations of age 3 reactive temperament (e.g., negative emotionality) and age 13 observed parenting (i.e., positive and negative behavior) and friendship (i.e., conflict and warmth), with multi‐informant ratings of age 15 aggression and rule‐breaking behavior. Negative parenting predicted growth in parent‐rated EB, but only for adolescents with early reactive temperament. Temperament did not affect sensitivity to positive parenting or friendship. Results are discussed in the context of differential susceptibility theory and intervention implications for adolescents. 相似文献
102.
Trish Baker 《Intercultural Education》2011,22(5):411-422
Educational research in cooperative learning suggests that inequity based on perceived status may be an issue with heterogeneous cooperative learning groups. This paper explores issues of status based on race, ethnicity and cultural background in the New Zealand tertiary classroom where there is a diverse mix of domestic and international students. A four-year research project examined attitudes and perceptions of both domestic and international tertiary students towards cooperative learning. The findings of the research project indicate that initial assumptions of relative status and ability of group members have a major effect on the outcomes of the group. These assumptions, demonstrated by both domestic and international students, may be based on expectations of language ability and familiarity with the pedagogical environment, including the assumed norms and behavioural patterns of the host educational setting, and may disadvantage students from different cultural backgrounds. This can become a self-fulfilling prophecy limiting the effective interaction and participation in the group by international students and other students perceived to be of low status, and the development of trust and reciprocal interdependence among group members. Strategies to weaken the effects of status, promote more equitable interaction and foster productive group outcomes are proposed. 相似文献
103.
Marc Sobel 《统计学通讯:理论与方法》2013,42(11):3037-3051
On a multiple choice test in which each item has r alternative options, a given number c of which are correct, various scoring models have been proposed. In one case the test-taker is allowed to choose any size solution subset and he/she is graded according to whether the subset is small and according to how many correct answers the subset contains. In a second case the test-taker is allowed to select only solution subsets of a prespecified maximum size and is graded as above. The first case is analogous to the situation where the test-taker is given a set of r options with each question; each question calls for a solution which consists of selecting that subset of the r responses which he/she believes to be correct. In the second case, when the prespecified solution subset is restricted to be of size at most one, the resulting scoring model corresponds to the usual model, referred to below as standard. The number c of correct options per item is usually known to the test-taker in this case. Scoring models are evaluated according to how well they correctly identify the total scores of the individuals in the class of test-takers. Loss functions are constructed which penalize scoring models resulting in student scores which are not associated with the students true (or average) total score on the exam. Scoring models are compared on the basis of cross-validated assessments of the loss incurred by using each of the given models. It is shown that in many cases the assessment of the loss for scoring models which allow students the opportunity to choose more than one option for each question are smaller than the assessment of the loss for the standard scoring model. 相似文献
104.
Abstract The development of unit root tests continues unabated, with many recent contributions using techniques such as generalized least squares (GLS) detrending and recursive detrending to improve the power of the test. In this article, the relation between the seemingly disparate tests is demonstrated by algebraically nesting all of them as ratios of quadratic forms in normal variables. By doing so, and using the exact sampling distribution of the ratio, it is straightforward to compute, examine, and compare the test' critical values and power functions. It is shown that use of GLS detrending parameters other than those recommended in the literature can lead to substantial power improvements. The open and important question regarding the nature of the first observation is addressed. Tests with high power are proposed irrespective of the distribution of the initial observation, which should be of great use in practical applications. 相似文献
105.
Rose D. Baker 《Journal of applied statistics》2016,43(3):387-395
We describe a model to obtain strengths and rankings of players appearing in golf's Ryder Cup. Obtaining rankings is complicated because of two reasons. First, competitors do not compete on an equal number of occasions, with some competitors appearing too infrequently for their ranking to be estimated with any degree of certainty, and second, different competitors experience different levels of volatility in results. Our approach is to assume the competitor strengths are drawn from some common distribution. For small numbers of competitors, as is the case here, we fit the model using Monte-Carlo integration. Results suggest there is very little difference between the top performing players, though Scotland's Colin Montgomerie is estimated as the strongest Ryder Cup player. 相似文献
106.
Jegers Marc 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(4):432-434
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - 相似文献
107.
108.
American ecologists recently began to address the ecology of cities. Concurrently, higher education institutions have developed sustainability education programs and instituted sustainability policies and projects. This paper draws together these two disparate areas by examining the nitrogen (N) budget of the Twin Cities campus of the University of Minnesota. We addressed the question: what were the annual inputs, outputs and internal cycles of N on the University of Minnesota Twin Cities campus? We found that 508 Mg N yr-1 were brought into the campus and 494 Mg N yr-1 were emitted from the University of Minnesota campus. The largest N inputs were abiotic fixation (conversion of N2 to NOx by combustion) and food for humans and animals. The largest N output was NOx, followed by wastewater. Our results expand the understanding of the ecology of institutions within an urban area and provide an opportunity for improving urban ecology education and environmental policy at educational institutions. 相似文献
109.
110.
The paradox of multiple elections 总被引:1,自引:0,他引:1
Assume that voters must choose between voting yes (Y) and voting no (N) on three propositions on a referendum. If the winning
combination is NYY on the first, second, and third propositions, respectively, the paradox of multiple elections is that NYY can receive the fewest votes of the 23 = 8 combinations. Several variants of this paradox are illustrated, and necessary and sufficient conditions for its occurrence,
related to the “incoherence” of support, are given.
The paradox is shown, via an isomorphism, to be a generalization of the well-known paradox of voting. One real-life example
of the paradox involving voting on propositions in California, in which not a single voter voted on the winning side of all
the propositions, is given. Several empirical examples of variants of the paradox that manifested themselves in federal elections
– one of which led to divided government – and legislative votes in the US House of Representatives, are also analyzed. Possible
normative implications of the paradox, such as allowing voters to vote directly for combinations using approval voting or
the Borda count, are discussed.
Received: 31 July 1996 / Accepted: 1 October 1996 相似文献