logistic equation: The mathematical expression for a particular sigmoid growth curve in which the percentage rate of increase decreases in linear fashion as the population size increases.

Two basic principles are involved, the idea of exponential growth and its ultimate control ... The basic relationship between finite rate of increase and intrinsic rate is where ln refers to ...

Laura Sanders reports on neuroscience for Science News. She wrote Growth Curve, a blog about the science of raising kids, from 2013 to 2019 and continues to write about child development and ...