In an experiment, 80 women with different levels of anxiety were asked to complete the same letter recognition task  At the same time, electrodes were placed on their heads to observe brain activities  The results showed that the EEG activities of women with high levels of anxiety were more complex and more prone to errors
When a woman is anxious, her brain will be disturbed by her thoughts and can't concentrate
 The experimenters concluded that female anxiety affected the quality of completing tasks