Professor Kemi Stree hands out two forms of his organic chem…

Professor Kemi Stree hands out two forms of his organic chemistry exam: form A and form B. Both forms of the exam are designed to measure students’ mastery of the material, and the forms feature all the same questions, but jumbled up in different orders. What kind of reliability is Dr. Stree assessing with this kind of testing format?

Charlie wants to determine whether her measure of trait open…

Charlie wants to determine whether her measure of trait openness is reliable, so she runs a study where she administers her measure to participants twice. Analyses revealed that the measure had low reliability. Which of the following factors could have caused this?