One CANNOT reduce problems of ceiling and floor effects by
A) avoiding the use of tasks that are too easy.
B) avoiding the use of tasks that are too difficult.
C) testing pilot participants to make sure that performance on a task will not be near the extremes of the scale.
D) making sure that pilot participants get nearly perfect scores when they are not being subjected to the experimental manipulation.

Question

Quizplus · Accepted Answer

Ceiling and floor effects refer to the problem of test scores clustering at the high or low end of the measurement scale, respectively. These effects can be reduced by ensuring the tasks are neither too easy (to avoid ceiling effects) nor too difficult (to avoid floor effects), and by pilot testing to ensure scores are distributed across the scale. However, ensuring that pilot participants get nearly perfect scores would actually contribute to a ceiling effect, not reduce it, making option D incorrect for reducing these problems.

One CANNOT Reduce Problems of Ceiling and Floor Effects by