This study analysed polytomous items' psychometric properties according to nonparametric item response theory (NIRT) models. Thus, simulated datasets--three different test lengths (10, 20 and 30 items), three sample distributions (normal, right and left skewed) and three samples sizes (100, 250 and 500)--were generated by conducting 20…

Reliability and differential item functioning (DIF) analyses were conducted on testlets displaying local item dependence in this study. The data set employed in the research was obtained from the answers given by 1,500 students to the 20 items included in six testlets given in English Proficiency Exam by the School of Foreign Languages of a state…

Although several scales are used to measure general and clinical learning climates, there are no scales that assess the preclinical learning climate. Therefore, the purpose of this study was to develop an effective measurement tool in order to assess the preclinical learning climate. In this cross-sectional study, data were collected from 3,540…

The aim of this study was to develop a valid and reliable instrument to measure Turkish kindergarten students' understandings of some science concepts and scientific inquiry processes which are grounded in the Turkish Preschool Curriculum. The sample of the study was 371 kindergarten students, 12 Subject Area Experts (SAE), and 7 Turkish Language…

In this study, the process of developing the Marital Satisfaction Scale (MSS) aiming to support studies in the field of marital satisfaction and to obtain information about couples in a short time through psychological counseling is discussed. The scale including 101 yes-no items aiming to reveal couples' opinions about their marriages was…

In this study, the Classical test theory and generalizability theory were used for determination to reliability of scores obtained from measurement tool of mathematics success. 24 open-ended mathematics question of the TIMSS-1999 was applied to 203 students in 2007-spring semester. Internal consistency of scores was found as 0.92. For…

The purpose of this study is to investigate validity and reliability of Short Form of The Family Sense of Coherence Scale's which was developed originally 26 items by Antonovsky and Sourani (1988) and 12 items short form by Sagy (1998). The scale measures individuals' perception of Family Sense of Coherence and it can be applied to adolescents and…