We present a blocks task in which cognitive change is apparent, and propose that computational modelling can help in examining how cognitive change occurs. We initially examine the performance of adults on the task, and use the results of this experiment to build both an adult model and a simulation of the task. Comparisons of the model with the adult data reveal further completion work regarding the models qualitative behaviour. However, when finished, the model will be able to predict how behaviour changes when domain knowledge is removed, and will provide the basis for models of children’s behaviour on the task
