{"creation_time": 1689114551, "last_updated": 1689114551, "name": "Relative Reinforcing Efficacy Purchase Task", "definition_text": "The Relative Reinforcing Efficacy Purchase Task (RREPT) is a 9-item task that assesses different aspects of behavioral demand based on the relationship between demand and price. Demand is reduced as price is increased, and the differences in shape of the demand curve are measures of how reinforcing a substance is. Participants are asked to indicate how many cigarettes they would purchase and consume in a single day if the price per cigarette was $0.00 (free), $0.10, $1.00, $3.00, $10.00, $30.00, $100.00, $300.00, and $1,000.00.", "id": "tsk_dn4ejmrGGaUAZ", "type": "task", "conditions": [], "concepts": [{"creation_time": 1689114100, "last_updated": 1689114100, "name": "Demand", "definition_text": "requirement or urgent need, particularly any internal or external condition that arouses a drive in an organism.", "contrasts": [{"creation_time": 1689114731, "last_updated": 1689114731, "name": "Demand", "id": "cnt_KJzJGLU9rDPmS"}], "concept_id": "trm_f01v8jugwrqHl"}], "indicators": [], "external_datasets": [], "implementations": [], "citation": [], "contrasts": [{"creation_time": 1689114731, "last_updated": 1689114731, "name": "Demand", "id": "cnt_KJzJGLU9rDPmS", "conditions": []}], "batteries": [], "disorders": []}