From Neuroscience News:
ShareExperiencing abuse or neglect as a child can cause multiple mental health problems, finds a new study led by UCL researchers. The research, published in the American Journal of Psychiatry, seeks to examine the causal effects of childhood maltreatment on mental health by accounting for other genetic and environmental risk factors, such as a family history of mental illness and socioeconomic disadvantage. The first-of-its-kind research analysed 34 quasi-experimental studies, involving over 54,000 people.
Quasi-experimental studies can better establish cause and effect in observational data, by using specialised samples (eg. identical twins) or innovative statistical techniques to rule out other risk factors. For example, in samples of identical twins, if a maltreated twin has mental health problems but their non-maltreated twin does not, the association cannot be due to genetics or the family environment shared between twins.
Across the 34 studies, researchers found small effects of child maltreatment on a range of mental health problems, including internalising disorders (eg. Depression, anxiety, self-harm, and suicide attempt), externalising disorders (eg. alcohol and drug abuse, ADHD, and conduct problems), and psychosis. These effects were consistent regardless of the method used or way in which maltreatment and mental health were measured. (Read more.)
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