What behavior may a preschooler exhibit when a new baby is introduced to the family?

When a new baby is introduced to the family, it is common for a preschooler to exhibit regression behaviors, such as returning to bedwetting or thumb sucking. This response is often a manifestation of the stress or anxiety the child may feel due to the changes in the family dynamic. Preschool-aged children thrive on routine and familiarity, and the introduction of a new sibling can be perceived as a threat to their security or position within the family.

This regression is a way for the child to express their feelings of insecurity or to seek comfort in behaviors that previously provided them solace. It is not unusual for children in this age group to temporarily lose previously acquired skills or revert to behaviors they had grown out of, as they navigate the emotional turmoil associated with such an adjustment.

In contrast, increased independence, improved communication skills, and developing new friendships are generally positive responses to growth and development and are less likely to be seen in the context of a significant family change like the arrival of a new sibling. These behaviors may be present but are not the immediate or typical response to the introduction of a new baby.