Inspection of thousands of student responses to computer-marked assessment questions has brought insight into the errors made by adult distance learners of science. Most of the questions analysed were in summative use and required students to construct their own response. Both of these things increased confidence in the reliability of the…

Teaching-learning process is incomplete without effective and meaningful assessment of students learning outcomes. This applies to both conventional modes of education as well as to open and distance learning modes. So far, conduct of examinations at the National Open University of Nigeria (NOUN), has been cumbersome and be-decked with "hydra…