A questionnaire designed to assess level of anxiety is administered. When analyzing results, researchers obtain a reliability coefficient of .65. What should they do with this information?
A)Nothing; .65 is an acceptable reliability coefficient
B)Decrease the number of items in the questionnaire
C)Use a more heterogeneous sample
D)Use a homogeneous but larger sample

Question

Quizplus · Accepted Answer

Using a more diverse group of subjects will increase test reliability, since it will increase the range of scores. Some action should be taken to address this; the lowest acceptable reliability coefficient is .70 and many researchers require a higher reliability coefficient.

A Questionnaire Designed to Assess Level of Anxiety Is Administered