This second feasibility study aims to adapt a protocol usually run in the laboratory in the Psychology Department for healthy participants (including the trauma film paradigm (James et al., 2016) and a simple cognitive task intervention) to remote (online) delivery. The motivation for this was restrictions to running in person laboratory experiments during the COVID-19 pandemic. Non-clinical participants will view film footage with COVID-19 related and potentially traumatic content (e.g. of seriously ill or dying patients in hospitals). Following film viewing, participants will be randomly allocated to either the experimental condition (simple cognitive task intervention, i.e. a memory cue followed by playing the computer game "Tetris" with mental rotation instructions) or the control condition (attention placebo, i.e., a memory cue followed by listening to a podcast for a similar duration). Any intrusive memories induced by the film (analogue trauma) will be monitored in a daily diary. It is predicted that the film (analogue trauma) will generate intrusive memories. If intrusive memories are generated, then it is predicted that participants in the experimental condition will report fewer intrusive memories related to the film (analogue trauma) during the following week than participants in the control condition. The development of this paradigm may inform the future development of a simple technique to prevent intrusive memories e.g. after repeated media consumption related to the COVID-19 pandemic.
This is a between-groups experimental study with non-clinical participants informed by prior laboratory work. It includes two sessions and a seven-day daily diary in between sessions. All study procedures will be delivered remotely rather than in a laboratory because of the COVID-19 pandemic as in an initial feasibility study (NCT04608097). The primary outcome is the number of intrusive memories related to the film (analogue trauma) recorded in a daily electronic diary during the following week (week 1). Our first feasibility study (NCT04608097) suggests it may be possible to generate intrusions when delivering the trauma film paradigm protocol remotely (online rather than in an in person laboratory) but this might lead to more variability between participants than when the paradigm is delivered in an in person laboratory. One possible reason might be that people are less emotionally affected by the film in a remote (online) setting compared to when they are viewing it in a more controlled laboratory setting. In this second study we will therefore only include participants who rate distress related to the trauma film as 5 or more out of 10 (see also James et al., 2015 for average scores on film distress in an in person laboratory setting). Our first feasibility work also suggests it may be harder to deliver an experimental intervention remotely using instruction videos with little experimenter interaction. To address this, while still keeping the remote (online) format, i.e. minimal experimenter input, we made some adaptations such as changing our digital materials e.g. film clips and film viewing instructions within the video. The first aim of this study is to investigate if the film (analogue trauma) will generate intrusive memories. The second aim is, if intrusive memories are generated, to investigate if participants in the experimental condition will report fewer intrusive memories of the film (analogue trauma) than participants in the control condition.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
98
A memory cue followed by playing the computer game "Tetris" (on own smartphone) with mental rotation instructions for ca. 12 minutes.
A memory cue followed by listening to a podcast (on own smartphone) for ca. 12 minutes.
Uppsala University
Uppsala, Sweden
Number of intrusive memories related to the trauma film
Number of intrusive memories related to the trauma film recorded by participants in a brief diary daily for 7 days.
Time frame: Week 1
Characteristics of intrusive trauma memories related to the trauma film
2 self-rated items measuring the level of distress and vividness associated with the intrusions related to the trauma film (11-point scales from 0 to 10) rated within the diary. High scores indicate higher level of distress/vividness.
Time frame: Week 1
Intrusion questionnaire
1 self-rated item measuring the frequency of intrusive/unwanted memories of the trauma film in the previous week on a 7-point scale (from "never" to "many times a day", with a follow-up question to specify the number if necessary). Unless the answer to item 1 is "never", 5 self-rated items measuring the characteristics of intrusive/unwanted memories in the previous week. The level of distress, nowness, reliving, disconnectedness and whether different triggers are associated with the intrusive/unwanted memories of the trauma film are measured on a 101-point scale (from 0 to 100). Higher scores indicate more intrusive/unwanted memories, higher levels of distress/nowness/reliving/ disconnectedness and a greater number of different triggers.
Time frame: Week 1 follow-up
. Impact of Event Scale - Revised (IES-R): Degree of subjective distress of post-film intrusions
Self-report measure that assesses subjective distress after a traumatic event (with reference to the trauma film). Here we include the intrusion subscale (8 items). Items are rated on a 5-point scale ranging from 0 ("not at all") to 4 ("extremely"). Items are summed (subscale score ranges from 0 to 32). Higher scores indicate worse outcome.
Time frame: Week 1 follow-up
Self-rated functioning associated with intrusive memories
A single bespoke item on impact on daily functioning associated with the intrusions from the trauma film rated on a 11- point scale (from 0 "none"; 5 "some"; 10 "extreme"). Higher scores indicate higher level of functional impairment.
Time frame: Week 1 follow-up
Self-rated concentration disruption associated with intrusive memories
A single bespoke item measuring the level of concentration disruption associated with the intrusions from the trauma film (11 point scale from 0 to 10). High scores indicate higher level of concentration disruption.
Time frame: Week 1 follow-up
Self-rated sleep ratings
Two self rated items: Item 1 measures the extent of being troubled by poor sleep (with reference to study event) on a 5-point scale (from not at all to very much), and item 2 measures the number of nights in the week with sleep problems on a 5-point scale (from 0-1 to 5-7 nights). Each 5-point scale is reverse scored (4 - 0) then summed. Possible total scores range from 0 - 8, with higher values indicative of better sleep.
Time frame: Week 1 follow-up
COVID-19 preventative behaviors index (adapted)
Self-report measure assessing preventative behaviors during the covid-19 pandemic (adapted for Swedish student population). 12 items are rated on a 5-point scale ranging from 1 ("Extremely unlikely") to 5 ("Extremely likely"). Items are summed. 4 items are reverse scored. Higher sum scores indicate more preventative behaviors during the COVID-19 pandemic.
Time frame: Week 1 follow-up
Intrusion provocation task (IPT)
In the Intrusion Provocation Task (IPT), participants are presented with neutral still images from the trauma film. Immediately afterwards for the next two minutes, they are allowed to think freely and report intrusions by pressing a button. The IPT intrusion score is calculated by the total frequency of intrusions (i.e. number of button presses), whilst higher values represent more intrusions.
Time frame: Week 1 follow-up
Verbal recognition memory test
The verbal recognition memory test comprises a number of true/false written statements relating to the trauma film. Participants indicate true or false as to whether or not the written statement about the film they watched 7 days earlier is correct. The score is the sum of correct responses, a higher score indicating better verbal recognition memory of the trauma film.
Time frame: Week 1 follow-up
Visual recognition memory test
The visual recognition memory test consists of static visual images - some are taken from throughout the film (different images from those used in the IPT), and some are unviewed images presented as filler. Images are presented individually and participants are instructed to view each image for 5 s. Participants indicate yes or no as to whether or not they recognize the image as being from the trauma film they watched 7 days earlier. The score is the sum of correct responses, a higher score indicating better visual recognition memory of the trauma film.
Time frame: Week 1 follow-up
Time perspective questionnaire
8 self-report items (5-point scale from 1 to 5) measuring time perspective on three subscales: past perspective (items 3, 5, 7), present perspective (items 1, 8) and future perspective (items 2, 4, 6). Item scores for each subscale will be summed. Higher values indicate higher levels of past/present/future time perspective.
Time frame: Week 1 follow-up
Future self questionnaire
Three free text response fields asking to imagine a future self identity in relation to social/occupational/other important situations. A single item measuring which of these future identities has been most affected by the COVID-19 pandemic. Then a free text response field to describe a mental image of this identity, 4 items measuring vividness (1 "not vivid at all", 10 "very vivid"), positivity (1 "very negative", 10 "very positive"), regularity of rehearsal (1 "never", 10 "very regularly"), and likelihood (1 "not at all likely", 10 "very likely") of that image on a 10-point scale. 3 items measuring the perspective of viewing that mental image ("through own eyes" or "as if seeing oneself"), whether other people are in the image (if yes, how many), and how old one will be in the image. All items are answered in terms of how the image was before and after the COVID-19 pandemic. Free text response field asking how the COVID-19 pandemic affected the future identity image.
Time frame: Week 1 follow-up
Future Expectancy Scale
Self-report measure that assesses expectancies about positive future life events. 10 items are rated regarding how likely it is that the event will happen in one's future on a 7-point scale ranging from 1 ("not at all likely") to 7 ("extremely likely"). Items are summed. Higher scores indicate more optimistic/positive future expectancies.
Time frame: Week 1 follow-up
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