56 – Variability & Motor Learning, Attentional Training, Explicit Instructions & Skill Transfer

TL;DR

High variability hinders motor learning, study finds.

Transcript

Today on the perception and action news, listener picks for articles to review, including more research on the effect of variability on motor learning, attention training to reduce the effects of stress on performance, and the effects of explicit instructions on transfer of training. So, it's time for a call to action. Hi everyone, this is Rob Gray... Read More

Key Insights

• Variability in motor learning can be divided into task space and null space components, with the former affecting performance and the latter allowing for exploration.
• High variability in both task and null space components was found to hinder learning in a virtual shuffleboard task.
• Task execution variability, such as shooting basketballs over barriers, did not significantly enhance learning, challenging previous theories.
• The lack of significant results in variability studies may be due to task constraints and lack of real-world incentives for optimal solution exploration.
• Attentional training programs using auditory tasks showed methodological flaws, limiting their applicability in reducing sports-related stress.
• Explicit knowledge of task reversals was beneficial for accuracy but slowed response speed, highlighting a trade-off in learning strategies.
• The ecological constraints-led approach and visual perception in sports are popular topics among listeners, guiding future podcast content.
• Feedback from listeners suggests a focus on sports-related episodes, with less interest in domains like driving and aviation.

Questions & Answers

Q: What was the main finding regarding high variability in motor learning?

The main finding was that high variability, whether in task space or null space components, impaired motor learning. This challenges the traditional view that variability aids in exploring perceptual motor space for optimal solutions. The study used a virtual shuffleboard task to demonstrate that low variability groups performed better.

Q: How did task execution variability affect basketball free throw performance?

Task execution variability, introduced by varying barrier heights during basketball free throws, did not significantly enhance motor learning. The study found no major differences in performance between variable and constant groups, suggesting that execution variability might not be beneficial for learning in this context.

Q: What were the methodological issues in the attentional training study?

The attentional training study had several methodological issues, including weak face validity, lack of a proper control group, and reliance on subjective measures without actual performance assessments. These flaws limit the study's conclusions about the effectiveness of attentional training in reducing sports-related stress.

Q: How did explicit knowledge affect learning in the key sequence task?

Explicit knowledge of the task reversal improved key pressing accuracy but slowed response speed. Participants with explicit knowledge performed better in accuracy but were slower than those with only implicit knowledge. This finding suggests a trade-off between accuracy and speed when explicit instructions are provided.

Q: What listener feedback influenced future podcast content?

Listener feedback indicated a strong preference for sports-related episodes, particularly those focusing on skill acquisition, ecological constraints-led approaches, and visual perception in sports. This feedback will guide future podcast content, with less emphasis on domains like driving and aviation.

Q: What new content format did the host introduce?

The host introduced a new video log (vlog) format to provide behind-the-scenes content related to the podcast and ongoing research. The vlog aims to offer additional insights and connect with the audience through platforms like YouTube, Facebook, and dedicated podcast apps.

Q: What are some upcoming topics on the podcast?

Upcoming topics on the podcast include an episode on the concept of flow, an examination of body awareness in athletes, and continued exploration of skill acquisition and motor learning. These topics align with listener interests and the host's research focus.

Q: How does the study on variability relate to real-world sports tasks?

The study on variability suggests that real-world sports tasks often have constraints and incentives for exploring optimal solutions, unlike the constrained virtual shuffleboard task used in the study. In sports, athletes may benefit from exploring different techniques to improve comfort and efficiency, which was not evident in the study's task.

Summary & Key Takeaways

• The podcast episode explores the impact of variability on motor learning, focusing on task space and null space components. High variability was found to impair learning in a virtual shuffleboard task, challenging the idea that variability aids skill acquisition. The episode also discusses attentional training and explicit instruction effects.

• Various studies are reviewed, including one on basketball free throws, which found no significant benefit from execution variability. The episode critiques another study on attentional training for sports, highlighting its methodological flaws. Explicit knowledge of task reversals was shown to improve accuracy but slow response speed.

• Listener feedback indicates a preference for sports-related content, guiding future podcast directions. The host also introduces a new vlog for behind-the-scenes content. Upcoming topics include flow, body awareness in athletes, and continued exploration of skill acquisition and motor learning.