Depression
Can hidden 'stay calm' words help depressed people hold back responses?
Open access · cc by · source: Europe PMC
Flashing emotion-control words too briefly to be seen made people with depression better at withholding responses to emotional faces, but did not change healthy people's performance.
Study at a glance
- Design
- Human experiment — Mixed design: group (major depression vs healthy control, between) × subliminal prime (emotion-control goal vs neutral words, within) × face emotion (angry vs happy, within) in an emotional Go/No-Go gender-classification task.
- N
- N=59 · 31 patients with major depressive disorder plus 28 matched healthy controls.
- Population
- Chinese adults aged roughly 17 to 39 with DSM-5 major depression (no recent antidepressants) and age-, gender- and education-matched healthy controls
- Outcome
- False alarms on No-Go trials (failures to withhold a response), hits and reaction times on Go trials
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Key findings
Patients with depression made fewer false alarms after the emotion-control primes than after neutral primes, while healthy controls showed no priming difference; after neutral primes patients had only marginally more false alarms than controls. Across everyone, happy faces produced higher hit rates, faster responses and fewer false alarms than angry faces. Patients responded faster overall, and only under emotion-control priming did they respond faster to happy than to angry faces.
Methodology
Thirty-one patients with major depression and 28 matched healthy adults classified faces by gender, pressing a key for one gender and holding back for the other. Just before each face, a word was flashed for 20 ms between masks so it could not be consciously seen: either emotion-regulation verbs such as 'calm' and 'subside', or neutral verbs such as 'stand'. The faces were angry or happy, and the researchers measured how often people wrongly pressed on No-Go trials and how fast they responded on Go trials.
Limitations
The sample was modest and the key effects were small, with some group differences only marginal, so replication is needed. The task used angry and happy faces but not sad faces, which are most relevant to depression. Participants might have used deliberate or habitual regulation strategies that were not measured, and the study tested only a single session, so it says nothing about lasting clinical benefit. Some predicted effects, such as a three-way interaction on false alarms, were not found.
How this study connects
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