Guidance hypothesis with verbal feedback in learning a palpation skill

Area of Science:

• Chiropractic Medicine
• Motor Learning Science
• Biomechanics

Background:

• Chiropractic education frequently involves teaching novel motor skills for assessing spinal dysfunction.
• Understanding the optimal feedback for learning these skills is crucial for effective clinical practice.

Purpose of the Study:

• To determine if the force application in a novel chiropractic skill is simple or complex.
• To identify the most effective level of knowledge of results (KR) feedback for learning and retaining this skill.

Main Methods:

• Thirty-five subjects learned a novel spring testing skill for thoracic spine motion palpation.
• Subjects were divided into four groups receiving varying amounts of verbal feedback (least to constant).
• Skill acquisition and retention were assessed over 9-10 sessions and follow-up trials.

Main Results:

• A target force range of 143 N ± 14 N was established for the skill.
• The group receiving intermittent feedback (Group 3) demonstrated the best skill retention.
• Constant feedback (Group 4) improved initial accuracy but hindered long-term retention.

Conclusions:

• Findings align with the guidance hypothesis, suggesting intermittent feedback aids motor skill retention.
• Constant feedback is beneficial for error reduction during practice but not for retention.
• Motor skill development theory should be integrated into chiropractic education.