Detailed Instructions: Given a text, write a compressed version of it in a single sentence.
Q: Daniel Hungerford observed that the Richmond-Kotelchuck model suggests that changes in practice result from effort applied to all three elements of the model-political will, social strategy, and knowledge base. It might seem that research activities apply only to the knowledge base aspect of the model.
A:
Hungerford observed that the Richmond-Kotelchuck model suggests that changes in practice result from effort applied to will, social strategy, and knowledge base. It seems that research apply only to the knowledge base aspect.