Ella started to clap at about 5 months. It was more my MIL who taught her, just clapping at her and clapping Ella's hands together from very early on. Then one day she just did it! She doesn't do it so much anymore, only when she hands OH a toy, and he takes it with his mouth and waves it around and growls (much like a dog does hehe)..She laughs and claps then.