In this paper the author reviews and extends his previous researches into the
negative birth experience. He notes that the incidence of the negative birth experience is constant at about 30%
even in asymptomatic individuals who on further enquiry admit to restrictive feelings which have effectively
limited their access to a full potential. The prominence of the negative birth experience in the production of
certain symptom complexes is detailed. The negative birth experience is therefore to be considered a potent
inhibiting factor to be dealt with therapeutically wherever it is discovered. In a consecutive series of 260 patients
76 (29%) indicated that they had negative birth experiences. Of these 48 (63%) reported prenatal experiences
responsible for their negative feelings at birth. Some of these experiences are described. An investigation into
the 61 cases of depression (having a high negative birth experience incidence of about 40%) reveals a high
incidence of prenatal trauma of 77% in the 26 with a negative birth experience. These figures suggest that
almost 20% (probably nearer 30% for cases of depression) of all patients attending for psychotherapy suffer
from symptoms due at least in part to prenatal trauma. It is further postulated that this 20% is likely to remain
inaccessible to psychotherapeutic approaches that ignore the role of prenatal trauma. Introduction In 1972 I first
met Dr. David Cheek and was profoundly impressed by the ease with which he was able to uncover birth
memories by means of the ideomotor signal and ideomotor questioning.