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Updated: Nov 22, 2025

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How does positive mood modulate time-based event expectancy?
Marina Kunchulia1, Ana Melishvili2, Roland Thomaschke3
1Institute of Cognitive Neurosciences, Free University of Tbilisi, 250 David Aghmashenebeli Allay, 0159, Tbilisi, Georgia. m.kunchulia@freeuni.edu.ge.
Abstract:
In the present study, we investigated how positive mood affects the formation of time-based event expectancies. After positive or neutral mood inductions, participants performed a binary choice response task in which two target stimuli (circle and square) and two pre-target intervals (800 and 1600 ms) appeared equally often. One of the targets was paired with the short interval and the other target with the long interval in 90% of the trials. We found that participants from the positive and neutral groups showed markedly different behavioral patterns of time-based expectancy. The time-based expectancy was restricted to shorter intervals for the positive group and to longer intervals for the neutral group. We propose that positive mood increases attentional prioritization of information that is temporally closer to us.
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