IBCLC EXAM: Growth
and Development
QUESTIONS AND
ANSWER 2023 UPDATE
How many ounces would you expect a 4 month old baby to gain each week? -
ANSWER 5 to 7 ounces
How much would you expect a 5 month old to weigh? - ANSWER Twice their birth
weight
How many ounces would you expect an 8 month old to gain each week? - ANSWER 3
to 5 ounces
How much would you expect a 1 year old to weigh? - ANSWER 3x their birth weight
(some sources say 2x their birth weight at 12 months)
What is different in the appearance of a breastfed baby vs. a formula fed baby at 12
months of age? - ANSWER They are leaner. Weighing less but having more body fat
When do breastfed babies grow the quickest? - ANSWER In the first 2-3 months,
slowing at 6 months of age.
How old would you guess an infant that is sitting without support is? - ANSWER 6 1/2
months old on average (between 4-9 months of age this occurs)
How old would you guess an infant that is standing with assistance is? - ANSWER 8
1/2 months old on average (between 5-12 months of age this occurs)
and Development
QUESTIONS AND
ANSWER 2023 UPDATE
How many ounces would you expect a 4 month old baby to gain each week? -
ANSWER 5 to 7 ounces
How much would you expect a 5 month old to weigh? - ANSWER Twice their birth
weight
How many ounces would you expect an 8 month old to gain each week? - ANSWER 3
to 5 ounces
How much would you expect a 1 year old to weigh? - ANSWER 3x their birth weight
(some sources say 2x their birth weight at 12 months)
What is different in the appearance of a breastfed baby vs. a formula fed baby at 12
months of age? - ANSWER They are leaner. Weighing less but having more body fat
When do breastfed babies grow the quickest? - ANSWER In the first 2-3 months,
slowing at 6 months of age.
How old would you guess an infant that is sitting without support is? - ANSWER 6 1/2
months old on average (between 4-9 months of age this occurs)
How old would you guess an infant that is standing with assistance is? - ANSWER 8
1/2 months old on average (between 5-12 months of age this occurs)
