Repeated traumatic experiences throughout infancy multiplies by 7 the risk of psychosis

http://www.eurekalert.org/pub_releases/2016-01/uog-rte012816.php

Public Release: 30-Jan-2016
Repeated traumatic experiences throughout infancy multiplies by 7 the risk of psychosis
University of Granada

50 pairs of siblings (one of them suffered psychosis while the other didn't) participated in this research, published in the renowned Journal of Psychiatric Research magazine

A research carried out with participation of the University of Granada (UGR) proves that suffering repeated traumatic experiences throughout infancy and adolescence multiplies by 7 the risk of suffering psychosis during adulthood.

Additionally, having been a heavy cannabis user (that is, smoking five times a week or more) during infancy or adolescence multiplies said risk by 6. This possibility rises a 30% for each point gained in a personality trait called neuroticism or emotional instability (emotional instability and insecurity, high level of anxiety, constant state of worry and stress, etc.).
[I think the reference to "smoking ... during infancy" has suffered in translation. Either it refers to exposure to others smoke, or it is referring to children past the age we would consider infancy. Because of the reference to "during infancy or adolescence", I suspect that "infancy" refers to children younger than adolescence.]

These three associations are independent of each other and of genre, age, or the patient's extroversion (another personality trait included in the so called Eysenck Personality Test, which the researchers used in their research).

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