By nature, children this age can be more concerned about their own needs and even act selfishly. At age two, children view the world almost exclusively through their own needs and desires.
Warning signs of a social / cognitive delay
28-Month-Old Development Milestones: Toddler Month by Month
10-Month-Old Baby: Development, Milestones And Growth
10-Month-Old Baby: Development, Milestones And Growth
How long does it take a 2 year old to adjust to daycare? - Quora
Socialization in the third year - Ovia Health
Is 18 months the right age for a toddler to start preschool? - Quora
Your 15-month-old's social and emotional development: Pay attention to meeee!
Your 22-month-old's social and emotional development: Issuing orders