Manage Stress: We all have a clearly measurable biological stress response that consists of elevation of several hormones in our body like noradrenaline and cortisol. One of the things that I am studying is how cortisol specifically affects decision-making. We do it by pharmacologically administering this hormone to people under a double-blind and place-be-controlled protocol – Gideon Nave. Regards. Sunder Thadani. 20161126.