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Test-retest reliability of eye tracking during the visual probe task in cocaine-using adults
Katherine R Marks1, Erika Pike1, William W Stoops2
1University of Kentucky, College of Arts and Sciences, Department of Psychology, 110 Kastle Hall, Lexington, KY 40506-0044, USA; University of Kentucky, College of Medicine, Department of Behavioral Science, 140 Medical Behavioral Science Building, Lexington, KY 40536-0086, USA.
Background:
Stimuli associated with cocaine use capture attention. Evidence suggests that fixation time measured on the visual probe task is a valid measure of cocaine cue attentional bias. The aim of this experiment was to demonstrate the test-retest reliability of cocaine cue attentional bias as measured by fixation time during the visual probe task.
Methods:
In a within-subject, repeated-measures design, thirty-six non-treatment seeking cocaine-using adults completed a visual probe task with eye tracking.
Results:
Participants displayed an attentional bias to cocaine-related images as measured by fixation time across two occasions (F (1, 35) = 56.5, p < 0.0001). A Pearson correlation indicated significant test-retest reliability for this effect (r = 0.51, p = 0.001). Response time failed to detect an attentional bias and test-retest reliability was low (r = 0.24, p = 0.16).
Conclusion:
Fixation time during the visual probe task is a reliable measure of cocaine cue attentional bias in cocaine-using adults across time.
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