Infant Growth & Development (Birth to 2 Years)

Question 1

Preterm is gestational age less than:

Answer 1

37 weeks

Question 2

Late preterm is newborn ____ weeks to _____ weeks gestation:

Answer 2

34 weeks to 36 6/7 weeks

Question 3

Low birth weight is:

Answer 3

Less than 2500 g (2.5 kg or 5.5 lbs)

Question 4

Very low birth weight is:

Answer 4

Less than 1500 g (1.5 kg or 3.3 lbs)

Question 5

Extremely low birth weight is:

Answer 5

Less than 1000 g (1.0 kg or 2.2 lbs)

Question 6

The average US newborn weighs ____ to ____:

Answer 6

6 lbs 2 oz (2812 g or 2.8 kg) to 9 lbs 2 oz (4173 g or 4.2 kg)

Question 7

The average US newborn is ___ to ___ inches at birth:

Answer 7

19 to 21 inches

Question 8

The average US newborn’s head circumference is ___ to ___ at birth:

Answer 8

13 to 14 inches

Question 9

Initial 8-10% weight loss occurs at 3-4 days of life is regained by ___ if formula fed and ___ if breastfed:

Answer 9

7 days formula and 14 days breast

Question 10

Weight doubles by ___, triples by ___, and quadruples by ___:

Answer 10

Doubles by 6 months, triples by 1 year, and quadruples by 2 years

Question 11

During the first 6 months a newborn should gain ___ per week:

Answer 11

5-7 oz

Question 12

From 6 to 12 months an infant should gain ___:

Answer 12

1.5 lbs

Question 13

Average weight gain in the second year is:

Answer 13

8-9 oz per month

Question 14

Length usually increases ___ by 1 year, ___ by 4 years, and ___ by 13 years:

Answer 14

50% by 1 year, doubles by 4 years, triples by 13 years

Question 15

Length increases by ___ per month during the first 6 months, then ___ per month through first year:

Answer 15

1 inch per month first 6 months then 1/2 inch per month through first year

Question 16

Head circumference increases by ___ per month during the first 6 months then ___ per month through the first year:

Answer 16

1/2 inch per month, 1/4 inch per month

Question 17

The posterior fontanel closes by:

Answer 17

6 to 8 weeks of age

Question 18

The anterior fontanel closes by:

Answer 18

12 to 18 months of age

Question 19

Formation of teeth begins:

Answer 19

The 3rd fetal month

Question 20

Central incisors erupt at:

Answer 20

5-7 months (mandibular) 6-8 months (maxillary)

Question 21

Lateral incisors erupt at:

Answer 21

7-10 months (mandibular) 8-11 months (maxillary)

Question 22

Cuspids (canines) erupt at:

Answer 22

16-20 months

Question 23

First molars erupt at:

Answer 23

10-16 months

Question 24

Second molars erupt at:

Answer 24

20-30 months

Question 25

Palmar grasp is strongest by ___ and disappears by ___:

Answer 25

Strongest by 1-2 months and disappears by 3 months

Question 26

Plantar grasp (foot) disappears after:

Answer 26

8 months

Question 27

Moro reflex disappears by:

Answer 27

6 months

Question 28

Stepping reflex disappears by:

Answer 28

Before voluntary walking

Question 29

Asymmetric tonic neck (fencing) reflex is diminished by ___ and disappears by ___:

Answer 29

Diminished by 3 months and gone by 6 months

Question 30

Babinski (plantar) reflex disappears by___:

Answer 30

1-2 years old

Question 31

Good head control occurs by ___:

Answer 31

2-3 months

Question 32

Rolling (front to back) occurs by ___:

Answer 32

4-5 months

Question 33

Rolling (back to front) occurs by ___:

Answer 33

6 months

Question 34

Sitting alone occurs by ___:

Answer 34

6 months

Question 35

Crawling occurs by ___:

Answer 35

8 months

Question 36

Pulling to stand and cruising occurs by ___:

Answer 36

10 months

Question 37

Standing alone occurs by ___:

Answer 37

12 months

Question 38

Walking forward occurs by ___:

Answer 38

14 months

Question 39

Walking backward occurs by ___:

Answer 39

16 months

Question 40

Walking up steps with assistance occurs by ___:

Answer 40

18 months

Question 41

Walking up and down steps alone occurs by ___:

Answer 41

24 months

Question 42

Jumping with both feet occurs by ___:

Answer 42

28 months

Question 43

Grasps and shakes rattle:

Answer 43

2-3 months

Question 44

Reaches for object or person:

Answer 44

3-4 months

Question 45

Brings hands to mid-line:

Answer 45

4-5 months

Question 46

Hand-to-hand object transfer:

Answer 46

5-6 months

Question 47

Unilateral reaching:

Answer 47

6-7 months

Question 48

Raking grasp:

Answer 48

6-7 months

Question 49

Finger feeding:

Answer 49

7-9 months

Question 50

Pincer grasp:

Answer 50

8-10 months

Question 51

Simple games (pat-a-cake):

Answer 51

9-10 months

Question 52

Makes marks on paper with pencil:

Answer 52

10-12 months

Question 53

Opens book, turns pages:

Answer 53

12 months

Question 54

Stacks 2 blocks:

Answer 54

12 months

Question 55

Uses eating utensils:

Answer 55

15-17 months

Question 56

Stacks 3 blocks:

Answer 56

17-18 months

Question 57

Simple puzzles (circle shapes first)

Answer 57

18-20 months

Question 58

Stacks 6 or more blocks:

Answer 58

24 months

Question 59

Responds to sounds:

Answer 59

Birth

Question 60

Smiles and coos:

Answer 60

2 months

Question 61

Laughs, expresses delight:

Answer 61

4 months

Question 62

Babbles:

Answer 62

5-6 months

Question 63

“Dada” & “mama”:

Answer 63

8-9 months

Question 64

Waves “bye-bye”:

Answer 64

8-9 months

Question 65

Understands “no”:

Answer 65

9-10 months

Question 66

2 words (in addition to mama & dada):

Answer 66

11-12 months

Question 67

Jabbering:

Answer 67

12 months

Question 68

Begins to point at body parts:

Answer 68

15-18 months

Question 69

2-word phrases:

Answer 69

18-22 months

Question 70

30-50 word vocabulary:

Answer 70

24 months

Question 71

Newborns can focus on objects between ___ & ___ inches:

Answer 71

4 & 30 inches

Question 72

Binocular vision develops between ___ & ___ months:

Answer 72

4 & 6 months

Question 73

Visual acuity should be ___ by 2 years:

Answer 73

20/70

Question 74

Infants are more receptive to ___ ___ sounds than ___ ___ sounds:

Answer 74

high pitched, low pitched

Responsive to high-pitched baby talk

Question 75

Object permanence (awareness that people continue to exist when out of sight) occurs at:

Answer 75

8-12 months

Question 76

Active exploration and trial-and-error learning begins at:

Answer 76

12-18 months

Question 77

Ability to problem-solve simple situations without trial-and-error:

Answer 77

18-24 months

Question 78

Rhythmic, approachable, adaptable, positive mood, and low intensity is this temperament profile:

Answer 78

Easy

Question 79

Less active, more avoidant, less adaptable, more negative moods, and low intensity is this temperament profile:

Answer 79

Slow-to-warm-up

Question 80

Arrhythmic, more avoidant, less adaptable, more negative moods, and low intensity is this temperament profile:

Answer 80

Difficult

Question 81

Social smile in response to persons:

Answer 81

6 weeks

Question 82

Stranger anxiety begins at ___ months and peaks at ___ months:

Answer 82

6 months and 12 months

Question 83

Separation anxiety begins at ___ months and peaks at ___ months:

Answer 83

8 months and 14 months