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An auditory Stroop effect for pitch, loudness, and time.

A L Morgan¹, J F Brandt

¹Audiology/Speech Pathology, V.A. Medical Center, Boston. MA 02130.

Brain and Language

|May 1, 1989

Summary

The auditory Stroop effect, a measure of reaction time to conflicting auditory stimuli, was observed for pitch and loudness but not duration in normal adults. This highlights the interplay between sound perception and word meaning.

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Area of Science:

Auditory perception research
Cognitive psychology
Speech processing

Background:

The Stroop effect traditionally involves visual stimuli, assessing interference between automatic reading and task demands.
An auditory Stroop effect is hypothesized when auditory stimuli conflict with response labels, impacting reaction times.
Understanding this effect can elucidate how the brain processes semantic and psychoacoustic features of speech.

Purpose of the Study:

To investigate the existence and characteristics of the auditory Stroop effect.
To determine if auditory Stroop interference occurs for pitch, loudness, and duration.
To explore the interaction between psychoacoustic attributes and semantic meaning in auditory word perception.

Main Methods:

An auditory Stroop test was administered to fifteen healthy adult participants.
Participants responded to auditorily presented words with meanings conflicting with response labels (e.g., high/low pitch).
Reaction times were systematically analyzed to identify significant differences.

Main Results:

A statistically significant auditory Stroop effect was found for pitch and loudness.
No significant auditory Stroop effect was detected for the duration of the words.
Reaction times were consistently longer when auditory stimuli meaning conflicted with the required response.

Conclusions:

The findings support the existence of an auditory Stroop effect, particularly for pitch and loudness.
Auditory perception of semantic meaning interferes with processing psychoacoustic features like pitch and loudness.
Further research is needed to understand the mechanisms underlying auditory Stroop interference and its absence for duration.

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