Question

When you arrive for your psychology exam, you are flabbergasted to find that all of the questions are on calculus and not psychology. The next day in class, students complain
so much that the professor agrees to give you all a makeup exam the following day. When you arrive at class the next day, you find that, although the questions are different, they are once again on calculus. In this example there should be high reliability of what type? What type(s) of validity is the test lacking? Explain your answers.