Choice behavior in the Wheels of Fortune task for MS patients and healthy controls (regression analyses, panel logit with individual random effect).

A. Model of choice integrating the effects of anticipating disappointment (d) and regret (r) in addition to the maximization of expected values (EV). Both MS patients and controls chose anticipating r and maximizing EV. MS patients did not choose anticipating d.B. Model of choice integrating the effects of risk in addition to the maximization of expected values (e). Healthy controls were risk neutral while MS patients were risk averse.