Seamus was born on 12.01.11 and he does science (because mummy makes him)……
Imitation at 2 weeks
Imitation at 10 months
Means end problem solving (and object permanence) at 10 months
Referential communication at 10 months
Mirror self-recognition (failure) at 10 months
Mirror self-recognition (success) at 22 months, natural test and mark test
Body scale errors at 22 months
Empathy at 22 months: self-focused and other-focused