Toddler Developmental Milestones, 18-24: Introduction (3:45); Areas of Development (1:33); Cognitive Development (2:40); Language and Communication Development (2:57); Social and Emotional Development (3:03); Physical Development (3:18); When to Call your Medical Provider (1:01); 18-24 Month Milestones: Recap (2:31); 18-24 Month Milestones: Conclusion (1:47); Credits: Toddler Developmental Milestones 18-24 (0:07);