I've long wished for more studies like this. So it's good to see. This one does miss some important variables: 1. Dose-dependent effects 2. Naive vs experien

I've long wished for more studies like this. So it's good to see. This one does miss some important variables: 1. Dose-dependent effects 2. Naive vs experienced users of a drug 3. Novel vs familiar task Though the authors spend a lot of time showing these stimulants reduce work efficiency, their central finding seems to be: "There was no significant effect of drug on performance" https://www.science.org/doi/10.1126/sciadv.add4165 https://www.science.org/doi/10.1126/sciadv.add4165