Simpler & Quantitative
f(t) is the rate of change of the installed base fraction
F(t) is the installed base fraction
p is the coefficient of innovation
q is the coefficient of imitation
Sales S (t) is the rate of change of installed base f(t) (i.e. adoption) multiplied by the ultimate market potential m:
The time of peak sales t*
The coefficient p is called the coefficient of innovation, external influence or advertising effect. The coefficient q is called the coefficient of imitation, internal influence or word-of-mouth effect.
Typical values of p and q when time t is measured in years:
The average value of p has been found to be 0.03, and is often less than 0.01
The average value of q has been found to be 0.38, with a typical range between 0.3 and 0.5
Comments on Its Validity
Adoption Is Sales (Dollars/Units)?
Products’ Characteristics Do Not Matter?
Statistician without Empirical Study
Indicators of E-commerce Development and It Application
Digital Divide Model
3 Types of Non-Users
Internet Users' Behavior/ Cybercitizen
Online Shops' Performance and Consumers' Behavior
Internet Business Users' Behavior
Special Methodological Issues in Users Research
Future Goals of Theory and Applications Development
Adoption Modeling Workshop, If Interested