I recently stopped to congratulate a young mother pushing her toddler in a stroller. The woman had been talking to her barely verbal daughter all the way up the block, pointing out things they had passed, asking questions like “What color are those flowers?” and talking about what they would do when they got to the park.

This is a rare occurrence in my Brooklyn neighborhood, I told her. All too often, the mothers and nannies I see are tuned in to their cellphones, BlackBerrys and iPods, not their young children.

There were no such distractions when my husband and I, and most other parents of a certain age, spent time with our babies, toddlers and preschoolers. Like this young mother, we talked to them. We read to them and sang with them. And long before they became verbal, we mimicked their noises, letting them know they were communicating and we were listening and responding. (And we’ve done the same with our four grandsons, all born after the turn of this wireless century.)

I am not the only one alarmed by modern parental behavior. Randi Jacoby, a speech and language specialist in New York, recently told me in an e-mail message: “Parents have stopped having good communications with their young children, causing them to lose out on the eye contact, facial expression and overall feedback that is essential for early communication development.