Computer code (using R) for Economic Growth and Evolution: Parental Preference for Quality and Quantity of Offspring can be downloaded from the following links:

Code for two genotype simulation

Code for three genotype simulation

You can download the open source R statistical package here.

Computer code (using NetLogo) for Population, Technological Progress and the Evolution of Innovative Potential can be downloaded here.

You can download the open source NetLogo package here.