> participants were instructed to either (a) write in cursive with their right hand the presented word with a digital pen directly on the screen, or (b) type the presented word using the right index finger on the keyboard.
Looks like this did this because "allowing the use of (the fingers of) both hands would cause many unforeseen effects on the brain, which would make it hard to interpret the results," since handwriting is done with one hemisphere.
Still weird.
however, in my case the blank keycaps did make the task a bit more difficult. i would write faster in cursive, and it might feel less effort.
also the reason was outlined:
> Allowing the use of (the fingers of) both hands would cause many unforeseen effects on the brain, which would make it hard to interpret the results.
btw, this post was quite frustrating to write.