Development of Spatial Visualization Test: Validity and Reliability Studies

Abstract

In this study, it was aimed to develop a multiple choice test in order to measure about spatial visualization skills, which is one of the components of spatial ability. In the test development phase, after taking expert opinion for content validity, six items were removed from the test and the test with 32-item was applied to 301 seventh-grade student for validity and reliability studies. In order to determine the factor structure of the test, explanatory factor analysis was performed via the Tetrachoric Correlation Matrix between the items and a two-factor structure was obtained by being removed the one item from the test. Afterwards, confirmatory factor analysis was applied by using the Asymptotic Covariance Matrix and the Weighted Least Squares Method in order to determine whether the two-factor structure of the test was confirmed as a model. After being removed of two items from the test and modifications were made between items close to each other theoretically, it was found that the two-factor structure had adequate fit indices. Item analysis was performed for the remaining 29 items; the test was found to be moderately difficult and highly distinctive which consists of items with different difficulty levels and highly distinctive. The test was found to be reliable in terms of KR-20 internal consistency with the reliability study that was done

Keywords

• geçerlik, güvenirlik, test geliştirme, uzamsal görselleştirme, uzamsal yetenek