Andrew Hayes , Longitudinal Study of Family Literacy Program Outcomes . Longitudinal studies must be purposeful, and they must aim either to evaluate a program or to answer specific research questions. Researchers should focus on the problems, not the symptoms. They should consider the complexity of the audience, as well as whether they will focus on how people may make decisions, or how they will make decisions. Parent and Child Interactions .
Research shows which parental teaching strategies work better and which are less effective.
How this information is used is critical. Family literacy can work, and does work, in some instances, with quality control. It does not work when resources are over-extended. What We Know . Catherine Snow and Patton Tabors , Intergenerational Transfer of Literacy .