{"id_concept_class": "", "creation_time": 1512660579861, "event_stamp": "2015-12-08T20:57:00", "def_id_user": "usr_566738e285cfc", "def_event_stamp": "2015-12-08T21:00:13", "last_updated": 1512660579861, "def_id": "def_566744dd328b6", "name": "2nd-order rule acquisition", "alias": "2nd-order decision task, second-order rule acquisition", "definition_text": "In this task, subjects are presented with 18 stimuli composed of three dimensions: 3 shapes, 3 orientations and 2 colored borders. Subjects had to learn one of three key responses for each of the 18 stimuli. In the "flat" condition, the 18 stimuli to 3 responses mapping was arbitrary, requiring subjects to individually learn each of the 18 associations. In a hierarchical condition, the colored borders indicated whether "orientation" or "shape" determined the response. This simplifies performance if subjects learn this hierarchical structure.", "id_user": "usr_566738e285cfc", "id": "trm_5667441c338a7", "type": "task", "conditions": [], "concepts": [], "indicators": [], "external_datasets": [], "implementations": [], "citation": [], "contrasts": [], "batteries": [], "disorders": []}