A researcher is designing a standardized questionnaire to measure test anxiety in students. Which of the following procedures would allow the researcher to assess the internal reliability of this questionnaire?
Administering the questionnaire to the same group of students on two separate occasions and correlating the total scores.
Comparing half of the items on the questionnaire to the other half of the items to see if the scores correlate.
Comparing the students' questionnaire scores with their actual final exam grades.
Having two different researchers independently score the questionnaire responses to check for agreement.
