What similar pattern emerged in the groups of musicians-both violinists and pianist that psychologist k. andrés ericsson and his colleagues studied

Eriki and two of his colleagues at Berlin's elite Academy of Music decide to make an experience using the musicians  and their talents. The class of violinists  and pianists were divided in 3 groups, using the skills levels as criteria. Every single student was asked about how many hours he /she had spent /training since the first time they touch the instrument

Ericsson discovered that the most successful  players spent minimum  10,000 hours practicing.

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.

answer: librarians is the correct word.