Effects of Error Experience on Learning to Lower Speech Nasalance Level

Area of Science:

• Speech-language pathology
• Motor learning
• Acoustic phonetics

Background:

• Hypernasality affects speech clarity and intelligibility.
• Learning new speech motor tasks, like reducing nasalance, can be challenging.
• Understanding the role of error experience in motor learning is crucial for effective interventions.

Purpose of the Study:

• To investigate the impact of error experience on learning to reduce speech nasalance.
• To compare the effectiveness of errorless versus errorful learning conditions for nasalance reduction.
• To determine if error experience negatively affects the acquisition and retention of lowered nasalance speech.

Main Methods:

• 45 typical speakers were divided into errorless and errorful learning groups.
• Participants learned to lower their nasalance scores using a nasometer.
• Learning conditions differed in the degree of error allowance, with errorless learning starting with easier targets.

Main Results:

• Errorless learners made fewer errors and achieved lower mean nasalance scores during acquisition.
• Errorless learners demonstrated superior performance in retention and transfer tests compared to errorful learners.
• Error experience was found to have a detrimental effect on learning to minimize nasality.

Conclusions:

• Errorless learning is more effective than errorful learning for acquiring speech with reduced nasalance.
• Error experience can impede the learning of novel speech motor tasks requiring nasality minimization.
• Errorless learning presents a potentially valuable paradigm for managing hypernasality in clinical settings.