Developmentally, there is no excuse for nine- or ten-month-old infants to fear strangers unless they have previously had a bad experience.

Question

Quizplus · Accepted Answer

Infants around the age of nine or ten months often exhibit stranger anxiety as a normal part of their developmental process, regardless of whether they have had bad experiences with strangers before. This behavior is linked to their growing attachment to familiar people and their ability to distinguish between known and unknown individuals.

Developmentally, There Is No Excuse for Nine- or Ten-Month-Old Infants