Prima Vitasari et al. / Procedia Social and Behavioral Sciences 8 (2010) 490–497491Anxiety while studying is a major predictor of academic performance (McCraty, 2007 and McCraty, et al., 2000) and various studies have demonstrated that it has a detrimental effect. Little is known that there exist a possible association between high level of anxiety and low academic performance among students. Researchers revealed that high levels of anxiety influence on the decrease of working memory, distraction, and reasoning in students (Aronen et al., 2005). Tobias in Ibrahim (1996) has been recognised that anxiety plays significant role in student's learning and academic performance, moreover anxiety has been known to have both facilitating and debilitating effects on academic achievement
The authors mention secondary evidence to discuss the correlation between high anxiety levels and academic progress. This is done to establish the main claim and building blocks of the study that is to be conducted.