When asked to pour a 12-oz drink, college student research participants on average poured that amount into a glass, indicating that they often misperceived how much alcohol they are actually consuming.

two times

Explanation:

An among college students is under age alcohol drinking. In most situations according to research they are ignorant of the amount of alcohol they've consumed and misperceived the quantity of alcohol considered to be moderate sized. That is why when asked to pour a 12-oz drink most of the college students poured two times more.