Stress Management : A Randomized Study of Cognitive Behavioural Therapy and Yoga By Jens Granath , Sara Ingvarsson , Ulrica von Thiele & Ulf Lundberg
CRITIQUE OF TREATMENT OUTCOME STUDY
Your instructor will provide you with a research journal article describing a treatment outcome study. Read and critique this article, addressing each of the questions listed below.
Answer in com-plete sentences and be sure to explain your answers so that you demonstrate a clear understanding of validity, bias, confounding variables, and experimental control.
PRELIMINARY INFORMATION
1. What was the independent variable? Describe how the treatment groups were generally different.
2. What was the dependent/outcome variable? How was it measured?
SAMPLING AND EXTERNAL VALIDITY
1. Describe at least two characteristics of the sample.
2. How were the subjects recruited?
3. If you were to replicate the study, how could you use incentives to increase participation? H might incentives confound (influence) the results?
4. Were subjects randomly allocated to treatment groups?
5. To what population could you generalize these results?
PROCEDURE AND INTERNAL VALIDITY
1 a. What specific parts of the procedure were different between the different groups?
1 b. What specific parts of the procedure were the same for the different groups?
2. How did the researchers make sure the different treatments were provided correctly? could they do to make sure?
3a. What possible experimenter effects could confound the results?
3b. How could you control for these experimenter effects?
SUBJECT BIAS
1a. How could subjects' expectations about the effect of the treatments confound results?
1 b. How could you control for these expectations?
2a. How may evaluation apprehension affect the results?
2b. How could you control or reduce evaluation apprehension? ETHICS
1. How would you protect subjects' privacy during and after the study?
2. What possible psychological harm could occur to subjects as a result of this study?
3. Did the authors achieve informed consent? Why is this important to do?
Attachment:- Control Validity.rar