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Glossary » Baker’s equation

Baker’s equation

BBEE; Baker’s basic ergonomic equation; an expression describing the factors driving the success of a particular assistive technology:

Likelihood of success (S) = M/(P+C+L+T)

M = a user’s motivation to complete a task
P = the physical effort required
C = the cognitive effort
L = the linguistic effort
T = the amount of time needed to activate and control the device