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Positive post-disaster images: A daydream machine?

Nicola J Hancock1, Neil R de Joux1, Stephen C Wingreen1

  • 1University of Canterbury, Christchurch, New Zealand.

British Journal of Psychology (London, England : 1953)
|September 14, 2016
PubMed
Summary
This summary is machine-generated.

Positive post-earthquake images may trigger mind wandering during vigilance tasks. Participants viewing progress-related images showed a conservative response bias and lower task focus, despite no significant changes in cerebral activity.

Keywords:
disasterearthquakeimagesmind wanderingperformancesustained attentionvigilance

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Area of Science:

  • Psychology
  • Neuroscience
  • Cognitive Science

Background:

  • Vigilance tasks are crucial for monitoring critical stimuli.
  • Post-disaster environments can impact cognitive functions.
  • Emotional stimuli can influence attention and performance.

Purpose of the Study:

  • To investigate the effect of post-earthquake images on vigilance task performance.
  • To examine self-reported task focus and cerebral activity (fNIRS) during the task.
  • To differentiate the impact of positive, negative, and neutral images.

Main Methods:

  • Seventy-one participants completed a vigilance task with embedded positive, negative, or control post-earthquake images.
  • Task performance was measured using signal detection theory (sensitivity A', bias β'').
  • Cerebral activity was monitored using functional near-infrared spectroscopy (fNIRS).

Main Results:

  • Participants viewing positive images exhibited a more conservative response bias and reported lower task focus.
  • No significant differences in cerebral activity were observed between image conditions.
  • These findings suggest positive images may induce mind wandering.

Conclusions:

  • Positive post-earthquake imagery can alter response bias and reduce task focus in vigilance tasks.
  • The absence of detectable changes in fNIRS data suggests a cognitive rather than a direct neural response.
  • Mind wandering is a potential mechanism explaining performance changes when exposed to positive, emotionally evocative stimuli in a post-disaster context.