ADDICTED TO LEARNING

http://futurity.org/science-technology/distinct-strategies-help-brain-take-action/
CALTECH (US)—The process of learning requires the sophisticated ability to constantly update our expectations of future rewards so we may make accurate predictions about those rewards in the face of a changing environment.
Although exactly how the brain orchestrates this process remains unclear, a new study by researchers at the California Institute of Technology (Caltech) suggests that a combination of two distinct learning strategies guides our behavior.