Yusuf Kara

Yusuf Kara
Southern Methodist University | SMU · Simmons School of Education and Human Development

PhD

About

13
Publications
1,715
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60
Citations
Additional affiliations
March 2018 - present
Southern Methodist University
Position
  • Programmer

Publications

Publications (13)
Article
Full-text available
Propensity score analysis, such as propensity score matching and propensity score weighting, is becoming increasingly popular in educational research. When a propensity score analysis is conducted, examining the covariate balance is considered to be crucial to justify the quality of the analysis results. However, it has been pointed out that solely...
Article
Full-text available
Within-cluster variance homogeneity is one of the key assumptions of multilevel models; however, assuming a constant (i.e. equal) within-cluster variance may not be realistic. Moreover, existent within-cluster variance heterogeneity should be regarded as a source of additional information rather than a violation of a model assumption. This study ex...
Article
Full-text available
Oral reading fluency (ORF), used by teachers and school districts across the country to screen and progress monitor at-risk readers, has been documented as a good indicator of reading comprehension and overall reading competence. In traditional ORF administration, students are given one minute to read a grade-level passage, after which the assessor...
Conference Paper
Full-text available
Thanks to their key advantages, multiple-choice item tests are the most widely used tools in large-scale exams and large classroom assessments. Although advantages such as application and scoring practicality make them very convenient to use, they have also some disadvantages like the possibility of cheating and giving the correct answer by chance....
Article
Full-text available
Missing data is a common problem in datasets that are obtained by administration of educational and psychological tests. It is widely known that existence of missing observations in data can lead to serious problems such as biased parameter estimates and inflation of standard errors. Most of the missing data imputation methods are focused on datase...
Article
Full-text available
This study investigated the performance of three selected approaches to estimating a two-phase mixture model, where the first phase was a two-class latent class analysis model and the second phase was a linear growth model with four time points. The three evaluated methods were (a) one-step approach, (b) three-step approach, and (c) case-weight app...
Article
Full-text available
This study proposes a two-part model that includes components for reading accuracy and reading speed. The speed component is a log-normal factor model, for which speed data are measured by reading time for each sentence being assessed. The accuracy component is a binomial-count factor model, where the accuracy data are measured by the number of cor...
Article
Full-text available
A multilevel Rash model using a hierarchical generalized linear model is one approach to multilevel item response theory (IRT) modeling and is referred to as a one-parameter hierarchical generalized linear logistic model (1-P HGLLM). Although it has the flexibility to model nested structure of data with covariates, the model assumes the normality o...
Conference Paper
Full-text available
Veri analizindeki en yaygın problemlerden bir tanesi kayıp veridir. Bu durum genellikle uygulama sırasında meydana gelmektedir. Örneğin büyük ölçekli sınavlarda, hız testlerinde veya öğrencilerin bazı maddeleri cevaplamaktan kaçındığı tutum ölçeklerinde kayıp veri sorunu ile karşılaşılabilmektedir (Field, 2009; Goegebeur, De Boeck ve Molenberghs, 2...
Article
Full-text available
Rater group, who give judgments about cutting scores, is the most important factor of the standard setting procedures. Reliability of the cutoff score(s), will be directly affected by the consistency of the raters’ judgments. In this study, performance of school teachers and domain experts were compared within the scope of the Generalizability Theo...
Article
Full-text available
In this study, the claims that the attitudes toward the course are low and that they are affected by demographic characteristics are examined. This study was conducted with the data obtained from 214 pre-service teachers who voluntarily participated to this study. On the contrary to the claims, it is found that the pre-service teachers' attitudes w...

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