Thread
In psychometrics, response bias is the mismatch between a perception (e.g., of effort) and its rating. Non-validated, custom scales like the below introduce conscious bias with RPE and other subjective measures. As a discipline, we need to do so much better
With scales like these the norm, it’s absolutely no surprise that athletes and coaches lose faith with subjective measures. Bullshit in = bullshit out 
But it’s not the fault of the measures, it’s the fault of those implementing them incorrectly link.springer.com/article/10.1007/s40279-023-01814-3 
And don’t believe the hype just because a study claims to have ‘validated’ a custom sale. It’s not as easy as sticking a load of emojis on then running some correlations
