An Investigation on the Revision of the DISCOVER Problem Matrix and its Psychometric Properties

DISCOVER Problem Matrix (DPM: Discovering Intellectual Strengths and Capabilities through Observation while for allowing Varied Ethnic Responses) is a problem continuum model that can be used for developing and assessing problem solving skills in domains of ability and knowledge. The DMP includes six problem types from wellstructured to ill-structured types. Because it is a problem continuum, more types can be added to the Model. A measurement instrument was developed based on the revised Matrix and administered to 519 seventh and sixth grade students. The instrument was found to have a reliability coefficient of .75. Statistically significant correlations were found between the problem types. The more distant two problem types are from each other, the lower the correlation between them, and the closer the problem types are to each other,the larger the correlations between them, which is a fact that provides evidence for the validity of the Matrix. Furthermore, the new problem type added to the Matrix was found to have a good fit with the structure of the Matrix.