BrainMass Quizzes Infant Development How much do you know about infant milestones? Find out with this quiz! 1 The average age for a child walking is: 10 months 12 months 14 months 16 months None of the Above 2 On average children begin to socially smile around 2 months of age. True False 3 The American Academy of Pediatrics encourages the introduction of solids at _______ months. 4 months 5 months 6 months 7 months 8 months 4 You should only consider a child's chronological age when determining if they are meeting developmental milestones. True False 5 You should contact your doctor if your child begins to lose skills they previously had the ability to perform. True False Submit Quiz