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James Estrin is a photographer and writer who has been with The Times since 1992.

Research co-authors at Cornell University included Nicola Dell, associate professor, Deborah Estrin, professor of computer science and Malte Jung, associate professor of information science.

"She witnessed intriguing uses of the technology for transactional purposes such as frailty health assessments, as well as for open-ended reminiscence experiences," Estrin said.

Dell, Estrin and Jung said there were inspired to think about this work as Cuadra was studying the use of earlier-generation CAs by older adults.

James Estrin is a staff photographer who also writes frequently.