What else impacts test anxiety -socioeconomic background?

I have a loose version of this research paper, approximately 1,500 to 2,000 usable words. I need to use many of the references I already have due to providing reviews on several for homework. I have about 10 sources and need another 2 or 3 on the socioeconomic piece. I am not sure how much of the current report can me used. Please advise