Trina Is an Average-Ability Science Student,but She Is in Danger

Essay

Trina is an average-ability science student,but she is in danger of receiving a failing grade due to her low test scores."I know the information when I study at home," she said to Mrs.Kirby,"but as soon as you pass out the test,I get so nervous that I can barely remember my name.Then,as I think about how badly I'm going to do,I get even more nervous."
-How can we interpret the negative effects of anxiety on Trina's test performances? That is,how is anxiety likely to hinder her performances?