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Abstract: We examined the role of emotion regulation (ER) in improving sibling relationship quality (SRQ) by evaluating the More Fun With Sisters and Brothers Program where 4‐ to 8‐year‐old siblings from 95 families were taught emotional and social competencies. Parents reported on SRQ and ER, and sibling interactions were observed in homes. SRQ and ER improved for program participants ( n = 55) in comparison to those in a wait list condition ( n = 40). Children participating in the program needed less parental direction to control negative emotions and refrain from directing negative actions toward others following the program. Higher levels of ER were linked with more positive SRQ at posttest. Results highlight the value of strengthening children’s emotion regulation processes as a mechanism for promoting prosocial sibling relationships.
Kennedy et al. (2008) studied this question.