But their paper argues that the null results were due to A)using tasks that do not have the strongest association (i.e. they did not measure fluid intelligence)

But their paper argues that the null results were due to A)using tasks that do not have the strongest association (i.e. they did not measure fluid intelligence), and B)setting baseline lighting levels too brightly so that pupils began at the minimum possible size. https://www.sciencedirect.com/science/article/abs/pii/S0010027721000627?via%3Dihub https://www.sciencedirect.com/science/article/abs/pii/S00100... So we will see going forward.