Most neural networks suffer from excessive plasticity, the learning
of new information interferes with information already stored in the
network. In this paper we review the pseudorehearsal solution to
this problem proposed by Robins [1995]. By localising the changes
to the function learned by the network pseudorehearsal allows
networks to be stable in the face of new learning, successfully
integrating both new and previously learned information. In this
paper we explore the impact that this mechanism has on the ability
of the network to generalise