S-shaped Response Model - Response Function
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S-shape response function exhibits increasing returns to scale at low levels (threshold) and diminishing returns at high levels (saturation) of marketing effort
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Item Response Theory
A modular approach for modeling the cell cycle based on functional response curves
![](https://blog.arkieva.com/wp-content/uploads/2020/04/basics-s-curve-figure3.png)
Some Basics on the Value of S Curves and Market Adoption of a New Product
![](https://www.researchgate.net/publication/351199456/figure/fig1/AS:1018107095162880@1619747055755/Ultrasensitive-responses-S-shaped-responses-and-delay-as-functional-modules-A-An.png)
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
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5. Medical Cannabis and the dose-response relationship
![](https://www.researchgate.net/profile/Dusan-Hrabec/publication/305336632/figure/fig1/AS:390934924677155@1470217557725/Advertising-response-functions-da_Q320.jpg)
Advertising response functions d(a)
![](https://www.mbaskool.com/2015_images/stories/june-images/apu-salerespfn.jpg)
Sale Response Function - Definition & Meaning, Marketing Overview