Behavioral Science

8 Deja Review: Behavioral Science
What are the developmental milestones
at 21 months of age?
What are the developmental milestones
at 24 months of age?
What are the developmental milestones
at 30 months of age?
What are the developmental milestones
at 3 years of age?
What are the developmental milestones
at 4 years of age?
What are the developmental milestones
at 5 years of age?
Gross motor: squats and recovers
Fine/visual: builds five-block towers
Language: two-word combinations
Social: toilet training
Gross motor: walks well up and down
stairs; jumps
Fine/visual: removes clothing; copies a
line
Language: 50-word vocabulary;
stranger understands half of
speech
Social: follows two-step commands;
engages in parallel play
Gross motor: throws ball over hand
Fine/visual: removes clothes; copies
lines
Language: appropriate pronoun use
Social: knows first and last names
Gross motor: pedals tricycle; goes
up and down stairs with alternating
feet
Fine/visual: draws a circle; eats with
utensils
Language: three-word sentences;
uses plurals and past tense;
stranger understands three-fourths
of speech
Social: group play; shares toys
Gross motor: hops and skips
Fine/visual: catches ball; dresses alone;
copies a cross
Language: knows colors; counts to 10
Social: imaginative play
Gross motor: hops and skips
Fine/visual: ties shoes
Language: prints first name
Social: plays cooperative games;
understands rules and abides by them