Updated: 1/30/2020

Stages of Development

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Overview
 
Age Gross Motor Fine Motor Communication Cognitive
Infant  
2 months
  • Holds head up when prone
  • Eyes track past the midline
  • Alert to sound
  • Social smile 
  • Recognize Parent 
4 months
  • Rolls front to back
  • Sits when propped
  • Grasps a rattle
  • Laughs
  • Soothed by voice 
  • Orients towards voice 
6 months
  • Sits alone
  • Crawls
  • Reaches with hands
  • Transfer objects
  • Babbles
  • Stranger anxiety 
  • Feeds self 
9 months
  • Pulls to stand
  • Immature pincer grasp
  • Says mama and dada
  • Waves bye 
  • Plays gesture games 
12 months
  • Walking alone
  • Fine pincer grasp
  • Few words
  • One step commands 
  • Points to object 
Toddler  
15 months
  • Stoops and recovers
  • Scribbles
  • 3-5 words 
  • Uses spoon and cup 
18 months 
  • Runs well
  • Stacks 3 cubes
  • Points to 1-3 body parts  
  • Helps in the house 
24 months
  • Throw and kick ball 
  • Draw a line
  • 50 word vocabulary
  • 50% intelligable
  • Parallel play 
  • Removes clothing 
Preschool  
3 years 
  • Rides tricycle
  • Copies a circle
  • 3 word sentences
  • 75% intelligable 
  • Brushes teeth with help 
4 years 

  • Hops on 1 foot
  • Copies a square
  • Plays cooperatively 
  • 100% intelligable
  • Knows 4 colors 
5 years
  • Skips 
  • Copies a triangle 
  • Defines words
  • 5 word sentences
  • Dresses self
School Age  
6-10 years


  • Reads 
  • Understands death 

11-18 years

 

  • Formal operations
  • Abstract reasoning
  • Formation of personality 
 
Tanner Stages of Sexual Development
 
Stage
Male Changes
Female Changes
1
  • Childhood
  • Childhood

 

  • Pubic hair develops
  • ↑ Testes size
  • Pubic hair develops
  • Breast tissue elevation
3
  • ↑ Pubic hair, darkens, and becomes curly 
  • ↑ Penis size/length
  • ↑ Pubic hair, darkens, and becomes curly
  • ↑ Penis width
  • Darker scrotal skin
  • Development of glans
  • Raised areola
5
  • Adult
  • Adult
  • Areola is no longer raised

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