Bass Diffusion

SD · 26

dF/dt = (p + qF)(1−F). Innovators (p) start; imitators (q) drive an S-curve. Adoption rate peaks then declines as the market saturates.

p innovation 0.030

q imitation 0.380

M market size 10000

t0.0

F (fraction)—

cumulative adopters—

adoption rate—

peak rate—

adoption ratecumulative F