Teaching them the right and wrong

When he started to learn about facial expressions and emotion. I will show angry face and raise my voice when he bite wire and plug

When they started learnt to read facial expressions

10 months old when they understand a little

As young when they can understand

As young when they understand.

3 yrs may be, can't remember

nothing specific wor

About 12 months old

after one year old

When she was 2