The difficulty of treating unequal siblings equally. In Progress Report 12 Charlie's parents have told his sister Norma that she can have a dog if she does well in a test, but they have already told Charlie that he can not. Denying her the dog because of Charlie fuels resentment and further family strain. Finding the right balance of limited parental attention and limited family budget is always difficult, but particularly so if one child is different from the others in a major way.