like winnybella DD was trying to clap at about 6 months - still loves it. Also not in any obvious sense a genius (unless you count being able to identity seagulls and slugs and various types of flowers 
). Copying I think was a bit later - possibly because she couldn't work out why madwoman her mother kept looming at her making strange gestures...she likes to do her own thing. But I do remember fretting about it (OFGS woman!)