Dymphna Van Den Boom Designed a Study to Improve Maternal

Dymphna van den Boom designed a study to improve maternal sensitivity in an attempt to improve the security of attachment relationships with infants. This research revealed that:

A) increasing the sensitivity with which parents interact with their infants is indeed possible) .
B) although sensitivity improved, attachment security did not change.
C) when sensitivity improved, attachment also became more secure.
D) irritable babies do not respond to sensitive caregiving.