{"creation_time": 1689113777, "last_updated": 1689113777, "name": "Hierarchical Task", "definition_text": "The Hierarchical Reinforcement Learning Task measures participants\u2019 ability to discover and use higher-order structure in their environment. Participants are presented with 18 stimuli composed of three dimensions: shape, orientation, and border color. The task requires that participants respond to stimuli by pressing one of three keys in response to each of the stimuli. In a \"flat\" condition, the keys are randomly associated with the shapes so that the participant must learn each association independently. In a \"hierarchical\" condition, the stimulus-response mappings are instead structured, such that participants can use a rule to determine the correct response based on the combination of the three features.", "id": "tsk_EaAMakeLSEYxm", "type": "task", "conditions": [{"creation_time": 1689113795, "last_updated": 1689113795, "name": "hierarchical ", "id": "con_ivQIbJ9uLJizy", "relationship": "HASCONDITION"}, {"creation_time": 1689113784, "last_updated": 1689113784, "name": "flat", "id": "con_PQcWmfTIiHnXz", "relationship": "HASCONDITION"}], "concepts": [{"creation_time": 1512660642919, "last_updated": 1512660642919, "def_event_stamp": "2015-12-30T16:14:19", "id_user": "usr_51bc76ae9636c", "id_concept_class": "ctp_C5", "event_stamp": "2015-06-12T21:05:23", "def_id_user": "usr_49a467bf4e0db", "def_id": "def_568402db14149", "name": "reinforcement learning", "alias": "", "definition_text": "the modification of the value placed on potential stimulus/action combinations based on the outcomes associated with those actions in the past", "contrasts": [{"creation_time": 1689113996, "last_updated": 1689113996, "name": "discovery/use of higher-order structure", "id": "cnt_HiS6WEdIYMyCR"}], "concept_id": "trm_557b4993a0fdd"}], "indicators": [], "external_datasets": [], "implementations": [], "citation": [], "contrasts": [{"creation_time": 1689113996, "last_updated": 1689113996, "name": "discovery/use of higher-order structure", "id": "cnt_HiS6WEdIYMyCR", "conditions": []}], "batteries": [], "disorders": []}