Crossmodal negativity bias in semantic processing

Area of Science:

• Cognitive Psychology
• Neuroscience
• Auditory and Visual Processing

Background:

• The negativity bias describes how negative events disproportionately affect cognitive processing compared to positive events.
• Previous research indicates slower reaction times (RTs) for negatively valenced items in semantic tasks, potentially due to preferential attention to negative stimuli diverting cognitive resources.
• The automatic vigilance hypothesis proposes this preferential attention as the mechanism behind the negativity bias.

Purpose of the Study:

• To investigate whether the negativity bias can be modulated by affective context in a crossmodal setting.
• To explore the mechanisms underlying crossmodal influences of valence on semantic processing.

Main Methods:

• Experiment 1: Assessed reaction times (RTs) to individually presented negative and positive pictures and words in a semantic task.
• Experiments 2 & 3: Employed short music clips (primes) with varying valence to investigate crossmodal influences on subsequent semantic processing of visual targets (pictures or words).
• Hierarchical Bayesian drift diffusion modeling was used to analyze the underlying cognitive processes.

Main Results:

• Participants exhibited slower RTs to negatively valenced picture and word targets in a semantic task (Experiment 1).
• Negative music primes, regardless of target valence, significantly slowed RTs in the semantic task compared to positive music primes (Experiments 2 & 3).
• Drift diffusion model analyses indicated that slower RTs in negative conditions were primarily due to reduced drift rates, suggesting impaired evidence accumulation.

Conclusions:

• Negative auditory valence can impair subsequent semantic processing of visual targets in an additive manner.
• These findings support the automatic vigilance hypothesis by demonstrating crossmodal effects of negative valence on attention and cognitive processing.
• The study highlights the pervasive influence of affective context on cognitive functions, even across different sensory modalities.