Ear asymmetry in telephone-listening behavior

Area of Science:

• Auditory Neuroscience
• Cognitive Psychology
• Human Factors Engineering

Background:

• The prevailing hypothesis suggests a right-ear advantage for processing verbal information.
• This study investigates ear preference in telephone listening behavior.

Purpose of the Study:

• To examine ear preference in verbal information processing during telephone use.
• To determine if a right-ear advantage exists or if situational factors influence ear choice.

Main Methods:

• Surveyed telephone listening behavior across three distinct subject groups.
• Included random samples of heavy and light telephone users, plus university secretaries.
• Analyzed reported ear preference and usual listening behavior.

Main Results:

• No evidence of a right-ear preference was found in any group.
• A statistically significant left-ear preference was observed across all groups.
• Heavy telephone use was associated with a consistent left-ear preference, often for hand-free convenience.

Conclusions:

• The findings challenge the established notion of a universal right-ear advantage in verbal processing.
• Convenience and task demands (e.g., writing, dialing) appear to be primary drivers of ear preference.
• Auditory pathway competition in noisy environments did not yield a right-ear advantage.