Scenario: Imagine thata psychologist working with veterans with post-traumatic stressdisorder wants to compare the effectiveness of several therapiesfocused on reducing symptoms of anxiety. The psychologist randomlysampled 20 veterans who recently returned from combat and randomlyassigned each of them to receive one of four interventions for 8weeks. A survey was used to measure the participants’ anxiety atthe end of the 8 weeks. Higher anxiety scores indicate moreanxiety. You can find the data for this Assignment in the WeeklyData Set forum found on the course navigation menu.
Anxiety scores for 5 veterans who received behavioraltherapy |
105 |
102 |
105 |
102 |
106 |
|
• Anxiety scores for 5 veterans who received cognitivetherapy |
113 |
110 |
111 |
107 |
104 |
|
|
• Anxiety scores for 5 veterans who received biofeedbacktherapy |
100 |
102 |
109 |
100 |
101 |
|
|
• Anxiety scores for 5 veterans who received medicationtherapy |
107 |
104 |
106 |
105 |
103 |
- Identify the obtained F value using SPSS and report it in youranswer document.
- Identify the p value using SPSS and report it in your answerdocument.
- Explain whether the F test is statistically significant.Explain how you know.
- Explain what the psychologist can conclude about therelationship between different types of therapy and anxiety.
- Should the psychologist conduct a post hoc test? Why or whynot? If post hoc testing is needed, conduct a Tukey HSD post hocanalysis in SPSS. Explain what the results tell you.
