> Ps how do you get a 4 year old to lie still in an mri ? I’m curious about this, as well. Could it have biased the results at all by finding kids who were abl

> Ps how do you get a 4 year old to lie still in an mri ? I’m curious about this, as well. Could it have biased the results at all by finding kids who were able to sit still and focus long enough to get measurements from the FMRI machine? Also, a sample size of 27 doesn’t seem sufficient, though maybe it is for a study like this.