@k_tsetsos and I wrote a new Perspective paper: https://osf.io/preprints/psyarxiv/2bjae

How do decision biases arise in the brain? Contrary to existing accounts, which lack explanatory depth and are often reduced to "just-so stories", we explore how choice biases emerge as a by-product of biologically plausible and normatively justifiable decision computations, such as relative value coding, selective information sampling, and non-linear accumulation dynamics.