A Brief Cognitive Intervention After Intrusive Memories of Trauma With Young Refugees: An Extension

Number of intrusive memories of traumatic event recorded by participants in a diary daily (morning, afternoon, evening and night) over one week.

Feasibility and Acceptability of the intervention assessed with 10 self-rated items, e.g. "Would you recommend playing Tetris to a friend?". Scores range from 0 - 10 with higher scores indicating greater acceptability/ feasibility.

Two items with open-ended follow-up questions: "How did you feel about playing Tetris after you had an intrusive memory?" and "Why"? or "How much would you prefer an intervention that is delivered by a computer/ smartphone compared to seeing a doctor/psychologist in person?" and "Why"?

Usage of the gameplay intervention assessed with 4 self-rated items: 1. Did you play Tetris in the last week since the last meeting? (Yes/No). 2. If yes, how many days did you play Tetris in the last week since we first practiced the game together? 3. How long did you spend playing Tetris at a time? (<10 min - >30 min), 4. How often did you manage to play Tetris after you experienced an intrusive memory? (11-point scale; 0 = not at all; 10 = every time).

A bespoke measure of 6 self-rated items to assess the impact of intrusive memories on concentration, control, sleep and stress (all rated on an 11-point scale): 2 items assessing experienced concentration difficulties due to intrusive memories and in general ( high scores indicating more concentration difficulties);1 item assessing feeling of control over intrusive memories (0 = no control; 10 = in full control); 2 items assessing sleep disturbances due to intrusive memories (higher scores indicating more sleep disturbance); and 1 item assessing to what degree intrusive memories affected stress levels (0 = not at all; 10 = affected very much).

1 item assessing for how long intrusive memories disrupted concentration on average (<1 minute - > 60 minutes)

Two open-ended questions are included: "How do intrusive memories interfere with your concentration?" and "How do intrusive memories interfere with your ability to settle in to this country and learn new skills, e.g. a new language?"

A bespoke measure comprising 3 self-rated items to assess the impact of the intervention on concentration, emotion and functioning at the time of playing (11-point scale, 0= not helpful, 10= very helpful).

2 open ended questions about the subjective impact of the intervention in the shorter, and longer term: "How would you describe the impact of this intervention in the short term?"; "How would you describe the impact of this intervention in the longer term"?

A 12 item self-rated questionnaire asking about difficulties due to health conditions, including mental or emotional problems. Scores range from 1 to 5 where 1=none and 5=extreme or cannot do.