For artificial entities to achieve high degrees of autonomy they will need to display appropriate adaptability. In this sense adaptability includes representational flexibility guided by the environment at any given time. This paper presents the use of constructivism-inspired mechanisms within a neural learning classifier system which exploits parameter self-adaptation as an approach to realize such behavior. Various network growth/regression mechanisms are implemented and their performances compared. The system uses a rule structure in which each is represented by an artificial neural network. It is shown that appropriate internal rule complexity emerges during learning at a rate controlled by the system. Categories and Subject Descriptors I.2.6 [Artificial Intelligence]: Learning – knowledge acquisition, parameter learning, connectionism and neural nets. General Terms Experimentation. Keywords Constructivism, Learning Classifier Systems, Neural Networks, Reinforcement Learning, Se...