However, the research into parasocial relationships is also based on correlational research e.g. Maltby et al. Therefore, a cause and effect cannot be established between poorer psychological health and the level/intensity of parasocial relationships. For example, it could be that the borderline-pathological parasocial involvement has caused the poor psychological health, rather than the other way around. Therefore, this lowers the internal validity of the absorption addiction model in explaining the levels of parasocial relationships.