A weakness is that looked at patterns of family communication with a schizophrenic child and found
-no difference when compared to the family patterns with a non-schizophrenic child.
-Further contradictory evidence comes from Hall& Levin (1980) who conducted a meta-analysis and found no difference between families with a schizophrenic member or without. This suggests that there is little evidence for double bind theory which casts doubt about the validity of the theory.