{"id_concept_class": "", "creation_time": 1512660579254, "event_stamp": "2015-12-08T21:01:13", "def_id_user": "usr_566738e285cfc", "def_event_stamp": "2015-12-08T21:01:54", "last_updated": 1512660579254, "def_id": "def_56674542a3c51", "name": "2-stage decision task", "alias": "two-stage decision task", "definition_text": "Subjects participate in a two-stage decision task where they make a binary choice in each stage (stage 1&2) and probabilistically receive reward after the final stage (stage 2). First-stage choices are primarily associated with one of two second-stages (labeled 2a and 2b): one first-stage choice leads to 2a 70% of the time and 2b 30% of the time, while the opposite is true of the other first-stage choice. Each second-stage choice has its own probability of reward (constantly changing via a random-walk). The ultimate goal of the subject is to maximize reward, which are only given during the second stage. The ideal subject would identify the most rewarding second-stage stimulus and make first-stage choices that make it more likely to arrive at the relevant second stage. ", "id_user": "usr_566738e285cfc", "id": "trm_5667451917a34", "type": "task", "conditions": [], "concepts": [], "indicators": [], "external_datasets": [], "implementations": [], "citation": [], "contrasts": [], "batteries": [], "disorders": []}