 Perhaps the most fully developed version of a psychological approach to the generality problem comes from Lyons (2019). Lyons agrees with Beebe that the relevant psychological process types are information-processing algorithms. But Lyons additionally suggests that these algorithms need to be relativized to parameters, understood as psychological variables that affect processing in a law-like way. For example, lighting conditions are a parameter that affects the speed and accuracy of visual information processing. As Lyons develops this view, the appropriate process type for a given belief token B is provided by the complete algorithmic specification of every psychological process that is causally relevant to B, along with the parameter values for all of these processes. As Lyons notes, one upshot of this approach is that the relevant process types will typically be very fine-grained. Smith’s belief-forming process type will not be vision, but something more like: visual recognition of objects based on retinal stimulus of sort S, in lighting conditions C, with attention distributed in manner M.