Does emotional valence modulate word recognition? A behavioral study manipulating frequency and arousal.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Linguistics

Background:

• Emotional valence influences word recognition, but processing advantages across valence categories and their modulation by word frequency and arousal remain unclear.
• Early stages of word recognition are thought to be automatic, yet the impact of emotional content on these processes requires further investigation.

Purpose of the Study:

• To investigate the processing advantages of positive, negative, and neutral words in a lexical decision task.
• To examine how word frequency and arousal modulate the effects of emotional valence on word recognition.
• To determine if emotional valence affects word processing during automatic stages.

Main Methods:

• A lexical decision task was employed using positive, negative, and neutral words, with manipulated word frequency (low vs. high).
• Arousal levels were controlled across experimental conditions.
• Two experiments were conducted with varying stimulus exposure times (2000 ms, 150 ms, and 300 ms) with 54 and 42 participants, respectively.

Main Results:

• Positive words were recognized faster, and negative words slower, than neutral words across both experiments.
• The valence effect on recognition speed was significant only for low-frequency words.
• The interaction between valence and frequency was reduced for high-arousal words under high time pressure (150 ms exposure).

Conclusions:

• Emotional valence significantly modulates early word recognition processes.
• Word frequency and arousal interact with emotional valence, influencing recognition speed, particularly for less frequent words.
• Emotional word processing occurs at early, potentially automatic, stages of cognitive processing.