[yorwba]

Those aren't even percentage increases, but standardized effect sizes. So if you take an individual survey respondent and all you know is that they self-reported higher AI usage, you can guess their answers to the self-reported individual effectiveness slightly more accurately, but most of the variation will be due to unrelated factors.

The question that people are actually interested in, "After adopting this specific AI tool, will there be a noticeable impact on measures we care about?" is not addressed by this model at all, since they do not compare individual respondents' answers over time, nor is there any attempt to establish causality.