A Chart of Infant Behaviors
 

Eisenberg, A., Murkoff, H. E., & Hathaway, S. E. (1989). What to expect the first year. New York: Workman Publishing
 
Behavior
Newborn
1 Month
2 Months
Expected 
  • lift head briefly when prone 
  • move arms & legs symmetrically 
  • focus on objects 8-15" from eyes 
  • display reflexes including Moro (startle), Babinski, rooting, sucking, grasping, stepping 
  • lift head briefly when prone 
  • move arms & legs symmetrically 
  • focus on face 
  • stepping reflex gone 
  • respond to bell or similar sound 
  • track object moved in short arc near face to midline 
  • smile in response to smile 
  • coo (or other non-cry vocalization) 
Likely 
  • respond to bell or similar sound 
  • track object moved in short arc near face to midline 
  • lift head 45º when prone 
  • track object moved in short arc near face past midline 
Possible
  • smile in response to smile 
  • coo (or other non-cry vocalization) 
  • lift head 45º when prone 
  • track object moved in short arc near face past midline 
  • bring hands together 
  • smile spontaneously 
  • laugh or squeal 
  • track object moved in arc near face from side to side 
 
Precocious
  • lift head 90º when prone 
  • hold head steady when held upright 
  • bring hands together 
  • smile spontaneously 
  • laugh or squeal 
  • track object moved in arc near face from side to side 
  • hold head steady when held upright 
  • raise chest when prone 
  • roll over (one way) 
  • attend to small objects 
  • reach for objects 
  • produce simple vowel-consonant combination 
 
Behavior
3 Months
4 Months
5 Months
Expected 
  • lift head 45º when prone 
  • track object moved in short arc near face past midline 
  • rooting, sucking, and grasping reflexes gone 
  • laugh or squeal 
  • track object moved in arc near face from side to side 
  • lift head 90º when prone 
  • hold head steady when upright 
  • raise chest when prone 
  • roll over (one way) 
  • reach for objects 
  • squeal 
  • smile spontaneously 
 
Likely 
  • bring hands together 
  • smile spontaneously 
  • laugh or squeal 
  • track object moved in arc near face from side to side 
  • lift head 90º when prone 
  • hold head steady when held upright 
  • raise chest when prone 
  • roll over (one way) 
  • reach for objects 
  • squeal 
  • bear weight on legs when held upright 
  • produce simple vowel-consonant combinations 
  • make raspberries 
Possible
  • hold head steady when held upright 
  • raise chest when prone 
  • roll over (one way) 
  • turn toward mother's voice 
  • produce simple vowel-consonant combinations 
  • make raspberries 
  • sit unsupported 
  • turn toward voice 
Precocious
  • reach for objects 
  • produce simple vowel-consonant combinations 
  • turn toward mother's voice 
  • make raspberries 
  • bear weight on legs when held upright 
  • bear weight on legs when held upright 
  • sit unsupported 
  • turn toward voice 
  • object to taking toy away 
  • pull to stand 
  • stand holding on 
  • feed self cracker 
  • object to taking toy away 
  • look for dropped objects 
  • work to reach objects 
  • pass objects between hands 
  • babble 
 
Behavior
6 Months
7 Months
8 Months
Expected 
  • Moro & Babinski reflexes gone 
  • produce simple vowel-consonant combinations 
  • self-support head when pulled to sitting 
  • feed self cracker 
  • make raspberries 
  • bear weight on legs when upright 
  • sit unsupported 
  • look for dropped objects 
  • pass objects between hands 
  • turn toward voice 
  • feed self cracker 
 
Likely 
  • bear weight on legs when held upright 
  • sit unsupported 
  • bear weight on legs when upright 
  • sit unsupported 
  • object to taking toy away 
  • look for dropped objects 
  • work to reach objects 
  • babble 
  • turn toward voice 
  • play peek-a-boo 
  • stand holding on 
  • object to taking toy away 
  • work to reach objects 
  • play peek-a-boo 
  • sit from prone position 
Possible
  • stand holding on 
  • object to taking toy away 
  • look for dropped objects 
  • work to reach objects 
  • pass objects between hands 
  • babble 
  • turn toward voice 
  • stand holding on 
  • pull to stand 
  • pick up small objects with thumb & finger 
  • say mama or dada indiscriminately 
Precocious
  • pull to stand 
  • sit from prone position 
  • pick up small objects with thumb & finger 
  • say mama or dada indiscriminately 
  • pull to stand 
  • sit from prone position 
  • grasp small objects with thumb & finger 
  • say mama or dada indiscriminately 
  • cruise 
  • play patty-cake 
  • play patty-cake 
  • cruise 
  • stand alone briefly 
  • understand no (but not necessarily obey) 
 
Behavior
9 Months
10 Months
11-12 Months
Expected 
  • work to reach objects 
  • look for dropped objects 
  • pull to stand 
  • stand holding on 
  • object to taking toy away 
  • say mama or dada indiscriminately 
  • play peek-a-boo 
  • sit from prone position 
  • pick up small objects with thumb & finger 
  • understand no (& sometimes obey) 
  • cruise 
 
Likely 
  • pull to stand 
  • sit from prone position 
  • object to taking toy away 
  • stand holding on 
  • pick up small objects with thumb & finger 
  • say mama or dada indiscriminately 
  • play peek-a-boo 
  • sit from prone position 
  • play patty-cake/wave bye-bye 
  • pick up small objects with thumb & finger 
  • cruise 
  • understand no (but not necessarily obey) 
  • play patty-cake/wave bye-bye 
  • drink from cup 
  • pick up small objects with tips of thumb & finger 
  • stand alone briefly 
  • say mama or dada discriminately 
  • say at least one other word 
Possible
  • play patty-cake 
  • cruise 
  • understand no 
  • stand alone briefly 
  • stand alone briefly 
  • say mama or dada discriminately 
  • say one other word 
  • roll ball back 
  • talk jargon 
  • walk well 
  • indicate wants without crying 
Precocious
  • drink from cup 
  • roll ball back 
  • pick up small objects with tips of thumb & finger 
  • stand alone well 
  • say mama or dada discriminately 
  • respond to simple gestured commands 
  • drink from cup 
  • roll ball back 
  • pick up small objects with tips of thumb & finger 
  • stand alone well 
  • talk jargon 
  • respond to simple gestured commands 
  • walk well 
  • say 3 or more words other than mama or dada 
  • respond to simple commands without gestures