It must use more adequate psychology and biology to drive out fallacious ideas, such as attachment measures. We reject theories based on retrospection because they invariably beg the question and explain nothing. We reject questionnaires or short interviews to probe into the intricacies of human mind, but also for its lack of humaneness, and its contradictory double-bind message. Last but by no means least, theories that cannot be tested, that is, theories than cannot be debunked or disproved are mere speculation. Debunking, then, proves a cornerstone in the history of ideas and science.
Recent history is full of examples.
When American eugeneticists attributed diseased of poverty to the inferior genetic construction of poor people, they could propose no systematic remedy other than sterilization. When Joseph Goldberger proved that pellagra was not a genetic disorder, but a result of vitamin deficiency among the poor, he could cure it. Disproving, old obsolete, backward views about the complex human socio-emotional development such as Freud's, Melanie Klein's, Jacques Lacan's or others's, and adopting a multidisciplinary stance where ethology plays a major role, we are both able to diagnose attachment disorders at the moment they are developing as well as treat them then and thereafter. The mismeasure of man. The Logic of Scientific Discovery.