The nursery at RiverSpring Residences in the Bronx is a sunny, inviting space outfitted with a bassinet, a crib with a musical mobile, a few toys, bottles, picture books for bedtime reading and a rack of clothing in tiny sizes.

The other morning, Wilma Rosa was there trying to soothe one of its cranky, small charges. “What’s the matter, baby?” she crooned, patting the complainer’s back. “You OK? I want you to go to sleep for a little while.”

Ms. Rosa, 76, a memory care resident in assisted living, visits the nursery daily. She has had plenty of experience with babies.

She was the oldest girl of eight children, so she handled lots of family responsibilities, she told Catherine Dolan, the facility’s director of life enrichment, who was asking questions to help the memories flow. Later in life, Ms. Rosa worked in a bank and a store; the stories emerged as she cuddled the doll.

No actual babies live in this immersive environment, where the fragrance blend includes a talcum scent. Just as no actual sales were taking place at the store down the corridor, another new RiverSpring undertaking.

Amid its wooden shelves of clothing, accessories and tchotchkes, the sales clerks were, like Ms. Dolan, staff members trained to interact effectively with residents with dementia.