Study shows positive effects of growing up with a sibling with disabilities

Having a child with a disability or a developmental delay is often a stressful experience for a family. Siblings in such families may be exposed to greater stress and challenges. There is little research about the positive effects of growing up with a sibling with disabilities. However, a new study published in Child Development by researchers at the Hebrew University of Jerusalem, the University of Cambridge, and the University of Toronto, examines how growing up as a sibling of a child with disabilities may nurture empathy. This is one of the first studies to examine the possible positive effects of growing up with a sibling with a disability.

"The findings indicate that siblings of children with disabilities may have greater cognitive empathy (i.e., understanding of others' thoughts and feelings), which is important as cognitive empathy is key for social skills." said Yonat Rum, a postdoctoral researcher at the Hebrew University of Jerusalem and the University of Cambridge.

Researchers examined data from the Longitudinal Israeli Study of Twins which includes 1,657 families of twins born in 2004-2005 with demographic characteristics similar to those of the Jewish majority population in Israel. Sixty-three families where one of the twins has a disability and the other is typically developing were identified.

The typically developing twin siblings of children with disabilities were compared to 404 typically developing twin siblings from the rest of the sample, on measures of cognitive and emotional empathy and prosociality, completed when all children were 11 years old. Participating children were administered a self-report questionnaire assessment of cognitive and emotional empathy and a computerized task designed to assess prosocial behavior. In addition, the participating children's parents completed a questionnaire to assess their children's prosocial behaviors.

The data showed that typically developing children who had a twin with disabilities scored higher than typically developing children who did not, in self-reported cognitive empathy. Contrary to predictions, no differences were found in emotional empathy and prosociality.

These positive effects might be due to the specific 'advantage' of cognitive empathy to better understand their sibling with disabilities, and to support the sibling relationship."

Ariel Knafo-Noam, Professor, Hebrew University of Jerusalem

The authors acknowledge the preliminary nature of the findings and call for further research using different modes of measurement in this neglected field.

This research was supported by the Israel Science Foundation and partially supported by the Halbert Centre for Canadian Studies, the Hebrew University of Jerusalem, and an Azrieli Fellowship.