Risky actions: Why and how to estimate variability in motor performance.

ABSTRACT: We describe the difficulties of measuring variability in performance, a critical but largely ignored problem in studies of risk perception. The problem seems intractable if a large number of successful and unsuccessful trials are infeasible. We offer a solution based on estimates of task-specific variability pooled across the sample. Using a dataset of adult performance in throwing and walking tasks, we show that mischaracterizing the slope leads to unacceptably large errors in estimates of performance levels that undermine analyses of risk perception. We introduce a "pooled-slope" solution that approximates estimates of individual variability in performance and outperforms arbitrary assumptions about performance variability within and across tasks. We discuss the advantages of objectively

SUBMITTER: Franchak JM 

PROVIDER: S-EPMC11849373 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature