[dreamer7]

This is a great point! But chess (and other such games like Go) vastly improves your working memory which should translate to improved performance in other tasks like coding.

[antonvs]

> vastly improves your working memory

Then wouldn't we expect to see evidence of that in studies like the OP? What's the evidence for this?

> which should translate to improved performance in other tasks like coding.

Same issue.