Answer the two discussion question separately. Make sure each question is 150 words and have two references.
1. Compare the following terms:test-retest reliability with inter-rater reliability.
content validity with both predictive validity and construct validity.
internal validity with external validity.
Can a test be reliable without being valid? Can a test be valid without being reliable? Explain.
2. What components differentiate experiments from the non-experimental methods discussed in Topics 2 and 3? How do experiments do a better job of assessing causality?