IQ, socioeconomic status, and childhood trauma in offspring of parents with a mood disorder

At least one in seven children have experienced child abuse and/or neglect in the past year and more than two thirds of children reported at least one traumatic event by the age of sixteen. Psychological problems, gender, mood, and socioeconomic status (SES) are all related to the severity of childhood trauma. Childhood trauma has not only been associated with a lower SES, but also with lower scores on IQ-tests. For example, sexual abuse, emotional neglect, and physical neglect are all negatively correlated with IQ. The relationship between SES, IQ and childhood trauma is not well understood. Especially in a population with individuals that report overall higher levels of traumatic experiences and have a lower IQ, such as offspring of people with a mood disorder. In this study, we investigated the relationship between SES, IQ, and trauma in offspring of parents with a mood disorder. Children (N = 198 and N = 40) participating in the MARIO cohort study were assessed for gender, age,...Show moreAt least one in seven children have experienced child abuse and/or neglect in the past year and more than two thirds of children reported at least one traumatic event by the age of sixteen. Psychological problems, gender, mood, and socioeconomic status (SES) are all related to the severity of childhood trauma. Childhood trauma has not only been associated with a lower SES, but also with lower scores on IQ-tests. For example, sexual abuse, emotional neglect, and physical neglect are all negatively correlated with IQ. The relationship between SES, IQ and childhood trauma is not well understood. Especially in a population with individuals that report overall higher levels of traumatic experiences and have a lower IQ, such as offspring of people with a mood disorder. In this study, we investigated the relationship between SES, IQ, and trauma in offspring of parents with a mood disorder. Children (N = 198 and N = 40) participating in the MARIO cohort study were assessed for gender, age, SES, and exposure to childhood trauma (emotional abuse, physical abuse, sexual abuse, emotional neglect, and physical neglect) using the Childhood Trauma Questionnaire (CTQ). Child IQ-scores were assessed with either the WISC or the WAIS. A linear regression analysis showed that IQ was only weakly related to childhood trauma. In contrast SES was strongly related to childhood trauma. These findings suggest that IQ is not a determinant of childhood trauma in current research but underscores the importance of SES. The significant association between SES and childhood trauma could be further investigated and implemented in clinical practice. Future interventions could for example focus on preventing and/or reducing childhood trauma in children who grow up with a low SES.Show less

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IQ, socioeconomic status, and childhood trauma in offspring of parents with a mood disorder