Categories Articles Sibling rivalry: 1 in 2 adults still argue and compete with their brothers and sisters Post author By crystalg Post date October 20, 2021 Study Finds Tags Adults, argue, Brothers', Compete, Rivalry, Sibling, Sisters’, Still, Their ← China is pressing US companies like McDonalds and Visa to accept its e-yuan at the Winter Olympics: report → Data Drives the World. You Need to Understand It