排序方式： 共有18条查询结果，搜索用时 15 毫秒
1.
Rebecca Zwick Dorothy T. Thayer Marilyn Wingersky 《Journal of Educational Measurement》1995,32(4):341-363
In a previous simulation study of methods for assessing differential item functioning (DIF) in computer-adaptive tests (Zwick, Thayer, & Wingersky, 1993, 1994), modified versions of the Mantel-Haenszel and standardization methods were found to perform well. In that study, data were generated using the 3-parameter logistic (3PL) model and this same model was assumed in obtaining item parameter estimates. In the current study, the 3PL data were used but the Rasch model was assumed in obtaining the item parameter estimates, which determined the information table used for item selection. Although the obtained DIF statistics were highly correlated with the generating DIF values, they tended to be smaller in magnitude than in the 3PL analysis, resulting in a lower probability of DIF detection. This reduced sensitivity appeared to be related to a degradation in the accuracy of matching. Expected true scores from the Rasch-based computer-adaptive test tended to be biased downward, particularly for lower-ability examinees 相似文献
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Kyle S. Wiley Molly M. Fox Theresa E. Gildner Zaneta M. Thayer 《Child development》2023,94(5):1356-1367
Infant social–emotional development may be impacted by the COVID-19 pandemic. This study investigated associations between maternal pre- and postnatal pandemic-related concerns and social–emotional developmental risk. Data, collected in 2020–2021, came from 220 mothers (87% white, 6% Hispanic, 1% Black, 3% Asian, 1% American Indian, Mage = 32.46 years), and infants (53.18% male, Mage = 12.98 months) in the United States. Maternal postnatal pandemic-related concerns were associated with total risk scores (B = 6.09, p-value <.001) and offspring risk of scoring positive for problems related to inflexibility (B = 4.07, p-value = .006). The total score association was moderated by self-reported social support. Infants may be detrimentally impacted by the pandemic via maternal pandemic-related concerns. Maternal social support may buffer infants. 相似文献
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This study analyzes the auditory, visual, and information‐presentation pace of children's science television programs. These half‐hour programs averaged more than 19 sound effects per minute, 14 visual changes (cuts, wipes, and fades/dissolves) per minute, and more than 27 topic shifts per program. These results indicate that the current crop of programs presents content at a pace that may reduce their effectiveness. 相似文献
4.
Nancy L. Allen Paul W. Holland Dorothy T. Thayer 《Journal of Educational Measurement》2005,42(1):27-51
Allowing students to choose the question(s) that they will answer from among several possible alternatives is often viewed as a mechanism for increasing fairness in certain types of assessments. The fairness of optional topic choice is not a universally accepted fact, however, and various studies have been done to assess this question. We examine an important class of experiments that we call C1-A, "choose one, answer all," designs, and point out an important problem that they face. We suggest two analytical methods that can be used to circumvent this problem. We illustrate our ideas using the data from Bridgeman et al. (1997) . Our reanalysis of these data show: (a) that differential topic difficulty exists in real choice data, (b) that it affects naïve analyses of such data and masks the effects, positive or negative, of examinee choice, (c) that in this study there is a measurable and positive effect of examinee choice that follows predicted patterns in most but not all cases, (d) that the beneficial strength of examinee choice varies from case to case, and (e) that while the benefits of choice in terms of average points scored on the essays are usually positive, there is a substantial amount of variation around these averages and it is not uncommon for "incorrect" choices to be associated with higher test performance. 相似文献
5.
E. Thayer Curry 《Communication Studies》2013,64(1):13-18
The first step in the investigation of the affective power of dramatic performances is the identification of those ways in which performances, either of the same or of different plays, differ from one another. Various studies have suggested that relatively few factors or dimensions account for the major portion of the variance among concepts. Using the general format of the semantic differential, the author has used audience reactions to dialogue, plot, acting, scenery, costumes, and lighting of filmed dramatic performances to identify paired adjective scales which define factors relevant to dramatic performances. 相似文献
6.
J E McCarroll J H Newby L E Thayer R J Ursano A E Norwood C S Fullerton 《Child abuse & neglect》1999,23(9):855-861
OBJECTIVE: To examine trends by year in reports of victims of child maltreatment in the US Army Central Registry (ACR) during the period 1975-97. We report the rates/1,000 children of Army families of initial substantiated cases from 1988-97 and the number of cases of maltreatment as a percentage of total victims for each year from 1975-97. Army data are compared to published reports from military service child abuse registries. METHODS: Numbers of cases of child maltreatment for each year were obtained from the ACR for major, minor, and total physical abuse, sexual abuse, emotional abuse, and neglect. Population figures for numbers of children were obtained from the Defense Manpower Data Center. RESULTS: The rates/1,000 for neglect have decreased by 24% from 1991-97, although the decrease has not been steady. The rates/1,000 of minor physical abuse declined 28% from 1993-97. The rates/1,000 of major physical abuse were basically unchanged from 1988-96, although the highest rate was recorded in 1997. The rates/1,000 of sexual abuse were also basically unchanged with the exception of increases in 1992-94 after which time the rates/1,000 returned to the pre-1992 levels. The rates/1,000 of emotional abuse cases more than doubled from 1988-97. CONCLUSIONS: While minor physical abuse and neglect have shown decreases over the past decade, major physical abuse has remained virtually unchanged and sexual and emotional abuse have shown fluctuations. All these forms of maltreatment are challenges to the Army Family Advocacy Program. 相似文献
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This case study explores relationships among news organizations in one media ecosystem to determine how willing journalists may be to form a more collaborative information network. A three-step, mixed methodological approach is employed: the ecosystem was “mapped”; an ongoing dialogue with journalists was initiated, and in-depth interviews were conducted with journalists and community storytellers to understand existing news flow in this region. Preliminary findings suggest a willingness to collaborate; however, legacy media may have more reservations about collaboration than journalists at community newspapers, public broadcasting stations, and entrepreneurial startups. 相似文献
9.
Child emotional maltreatment: a 2-year study of US Army cases. 总被引：6，自引：0，他引：6
10.
We developed an empirical Bayes (EB) enhancement to Mantel-Haenszel (MH) DIF analysis in which we assume that the MH statistics are normally distributed and that the prior distribution of underlying DIF parameters is also normal. We use the posterior distribution of DIF parameters to make inferences about the item's true DIF status and the posterior predictive distribution to predict the item's future observed status. DIF status is expressed in terms of the probabilities associated with each of the five DIF levels defined by the ETS classification system: C–, B–, A, B+, and C+. The EB methods yield more stable DIF estimates than do conventional methods, especially in small samples, which is advantageous in computer-adaptive testing. The EB approach may also convey information about DIF stability in a more useful way by representing the state of knowledge about an item's DIF status as probabilistic. 相似文献