Using the theory of generalizability in determining the reliability of the Ata model aircraft scoring switch

The main purpose of this research is; According to the generalizability theory, it is to examine the results of the Generalizability studies with the determined patterns of the scores obtained by scoring the Ata model airplanes with the Ata model rubric by more than one rater. The data in the research were obtained by collecting the data by scoring 8 items and 5 raters of 120 aircraft, which were prepared as a result of 32 hours of training for students aged 10 and over who were educated in different schools in Gaziantep. G study and K study were done by using the completely crossed design in the Generalizability Theory of the obtained data. According to the results obtained, it was seen that the generalizability and reliability coefficients were not at an acceptable level as a result of the G study. As a result of the scenarios made in the decision study, it was concluded that increasing the number of items would significantly increase the G coefficient. Keywords: Model airplane, generalizability theory, G study, K study, rubric