R Optimisation Tips using Optim and Maximum Likelihood

This post summarises some R modelling tips I picked up at AMPC2011.

Issues in Model Building and Parameter Estimation | Case Studies in Psychology

In this post I discuss issues related to Model Testing and Parameter Estimation. I focus on the role of this process in the scientific development of knowledge. I was motivated to write this post in an attempt to integrate the set of modelling issues that I was encountering across a range of psychological research topics including psychological tests, learning curves, social networks, and well-being. The post provides links to additional resources and presents some of my own observations on model testing and parameter estimation. I make the disclaimer that my ideas are still evolving on this topic.