Dr Li Is Interested in Creating a Measurement of Religiosity

Essay

Dr. Li is interested in creating a measurement of religiosity. According to the dictionary, religiosity is "the quality of being religious; piety; devoutness." He creates a measure comprising 10 statements. People respond to each statement using the following scale (1 = strongly disagree, 3 = neither agree nor disagree, 5 = strongly agree). Some of the statements are below.
Statement 1: "I believe in a religion."
Statement 2: "Part of who I am stems from my religious beliefs."
Statement 3: "I believe that religion is unnecessary."
Given the situation above, explain the difference between criterion validity, convergent validity, and discriminant validity. Why is each one important?