My just turned 4 year old is very chatty and noisy at home but at playgroup she will not talk to the palygroug leaders or indeed any adult she is not familiar with. This has always been the case, most of my family are quite shy people, I was like this myself but i know how it held me back and i forced myself to be more outgoing. My 11 year old son was like this also. I worry that itwill hold them back in life and want to help them with this low self esteem/ confidence issue. Any ideas?