Psychoanalysis

Psychoanalysis holds that a considerable part of what people do follows reasons they have no access to themselves. It did not come out of a laboratory but out of a consulting room — out of listening to patients whose complaints had no neurological explanation.

Between 1900 and 1940 that grew into a movement with societies, journals, training regulations and schisms. The quarrelling is part of the subject: Jung left, Adler left, and in London Anna Freud and Melanie Klein argued for five years about when a child has an inner life that can be analysed.

For an archive that documents replication, this is the hardest folder. None of the four works here is a study; they are interpretations, systematics and case reports. These files therefore carry no replication rate but the question of what still holds of their claims — and who checked.