Testing of an instrument to analyse children’s picture books in order to measure their validity and reliability
Elementary teachers require tools to help them evaluate the level of complexity of the pictures books they use with young readers. This paper presents the preliminary results of research regarding the development and testing of such an instrument to analyse children’s books. The validity and reliability of the tool were assessed using the expertise of experts and interrater agreement, which led to four subsequent versions. Although its reliability could not be totally confirmed, the experts corroborated the high level of validity offered by the tool. Also, this research provides recommendations for the development and testing of such instruments in order to measure their validity and reliability.