A clinical psychologist investigated the symptom profiles of clients diagnosed with Post-Traumatic Stress Disorder (PTSD) undergoing trauma-focused therapy. For one week, a group of 8 clients recorded the daily frequency of their intrusive memories and the daily duration of their panic episodes. The mean scores for each category were calculated.
| Participant | Daily Frequency of Intrusive Memories | Daily Duration of Panic Episodes (minutes) |
|---|---|---|
| Client A | 3 | 12 |
| Client B | 4 | 2 |
| Client C | 3 | 45 |
| Client D | 2 | 0 |
| Client E | 3 | 55 |
| Client F | 4 | 8 |
| Client G | 3 | 60 |
| Client H | 2 | 18 |
| Mean | 3.0 | 25.0 |
State how the standard deviation for the daily frequency of intrusive memories would differ from the standard deviation for the daily duration of panic episodes.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
