S-shaped Response Model - Response Function

S-shape response function exhibits increasing returns to scale at low levels (threshold) and diminishing returns at high levels (saturation) of marketing effort

Item Response Theory

A modular approach for modeling the cell cycle based on functional response curves

Some Basics on the Value of S Curves and Market Adoption of a New Product

Ultrasensitive responses, S-shaped responses and delay as functional

Sigmoid function - Wikipedia

S-Shaped Response Functions: Implications for Decision Models: Journal of the Operational Research Society: Vol 31, No 11

5. Medical Cannabis and the dose-response relationship

Advertising response functions d(a)

Sale Response Function - Definition & Meaning, Marketing Overview