It is believed that exaggerated response to bad memories is similar for all negative memories. Now, a team of Indian scientists have shown that exaggerated response and difficulty to get rid of bad memories could depend on whether the bad memory was formed before or after a stressful event. The study done by Bangalore-based National Centre for Biological Sciences (NCBS) and Institute for Stem Cell Biology and Regenerative Medicine (inSTEM) has been published in journal eLife. The research team included Mohammed Mostafizur Rahman, Ashutosh Shukla and Sumantra Chattarji.