Frankly for less than 6 you must not do without. I gave my niece who is a teacher in kindergarten and two friends ... This book clearly explains the reactions of infants ages face several situations of practical life, and that given their age and maturity Cerebral bluffing ... because the solutions really work .. Such as the taking her child in her arms, to surround when it starts to get a temper ... My method was rather to begin to raise your voice and not to yield ... And well their method works 100 times better ...!