“…This finding is likely true in many cases and especially in healthy populations. In fact, however, mental illness appears to be associated with impaired or inefficient exploration behavior ( Addicott et al, 2017 ; Cathomas et al, 2021 ; Smith et al, 2021a ) and several disorders have now been described as involving priors held with excessive precision, including depression and mood ( Seth and Friston, 2016 ; Badcock et al, 2017 ; Clark et al, 2018 ), schizophrenia and delusion ( Tschacher et al, 2017 ) and aspects of obsessive compulsive disorder ( Kiverstein et al, 2019b ). This is exactly what most clients show at the beginning of therapy.…”