[notahacker]

The study suggests the context switching shouldnt have had much effect as the control group (who switched 6 times) had BGL decrease consistent with normal rest (so by extension those who switched only 3 times must have had lower than normal rates of BGL decrease at rest over the real life 90 minutes, which is potentially the most interesting part of the correlation they found)

They also claim no effect on subjective reported stress level (but those who switched more times did report more stress, just not to a statistically significant degree...)

Although the games were reportedly "easy" I do think it'd be interesting to see whether there were any meaningful differences in the approaches to the game and levels of performance of the different cohorts. And if they performed similarly but those on a slower "subjective timescale" received vastly more "reward" indicators like higher scores, "you wins" or proportions of a grid/map ticked off because they played each game for longer, that would also be a confounding factor