Colleagues here at the RUG have unearthed some concerning statistical mistakes in a meta-analysis published in the 'Journal of Psychiatric Research' on exercise as a treatment for depression: the authors had "corrected" for publication bias in the wrong direction, exaggerating effect sizes. Findings are being published in a brief letter to the editor (https://doi.org/10.1016/j.jpsychires.2024.08.045), and the response by the original authors (https://doi.org/10.1016/j.jpsychires.2024.08.046) sadly strikes me as quite dishonest. #MetaScience