Given that I just spent a good chunk of the evening dissatisfied with my ability to play double bass with superior intonation, I'd really like to see more data

Given that I just spent a good chunk of the evening dissatisfied with my ability to play double bass with superior intonation, I'd really like to see more data on these claims. It would be super useful if the study's initial claims were born out in larger studies, though I am not super eager to start experimenting on myself.