A researcher wishes to increase the score reliability of a reading test being used in a study.The score reliability could be most easily increased by increasing the
A) number of items on the test.
B) number of persons tested.
C) homogeneity of the group tested.
D) number of types of items on the test.

Question

Quizplus · Accepted Answer

Increasing the number of items on the test will increase the internal consistency of the test scores and thus increase the reliability of the test. This is because adding more items will increase the overall variability of the scores, increasing the test's ability to differentiate between individuals with different levels of reading ability.

A Researcher Wishes to Increase the Score Reliability of a Reading