PSY 550 (PSY550)

1. QUESTION: For each of the following examples, explain whether the researcher has made a correct decision or has made a Type 1 or Type 2 error. Explain why. 2. Dr. G rejects the null hypothesis although the independent variable had no effect. 3. Dr. R rejects the null hypothesis when it is false. 4. Although the independent variable had an effect, Dr. E does not reject the null hypothesis Your Answer: 1. Type I error is made when we reject the null hypothesis, but the null hypothesis i...

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam: Research Methods

PSY 550 Midterm Exam 1

Question 1: test-retest reliability with inter-rater reliability content validity with both predictive validity and construct validity internal validity with external validity Question 2: Define and describe the six steps of the scientific method. Give an example of each step Question 3: When is it appropriate for a researcher to use deception in a study? When is it not appropriate? How can the negative effects of deception be minimized? Question 4: Use Stevens’ model of m...

When is it appropriate for a researcher to use deception in a study? When is it not appropriate? How can the negative effects of deception be minimized? Contrast probability and nonprobability sampling methods; generally speaking, which methods are most useful? Contrast experimental with quasi-experimental methods; generally speaking, which methods are most useful? Researcher Sandy Beach found a correlation coefficient of +2.3 between variables X and Y. She is thrilled because that correlati...