BLOOMINGTON — Caregivers whose eyes wander during playtime — due to distractions such as smartphones or other technology, for example — may raise children with shorter attention spans, according to a new study by psychologists at Indiana University.

The work, which appears online today in the journal Current Biology, is the first to show a direct connection between how long a caregiver looks at an object and how long an infant’s attention remains focused on that same object.

“The ability of children to sustain attention is known as a strong indicator for later success in areas such as language acquisition, problem-solving and other key cognitive development milestones,” said Chen Yu, who led the study. “Caregivers who seem distracted or whose eyes wander a lot while their children play appear to negatively impact infants’ burgeoning attention spans during a key stage of development.”

Yu is a professor in the IU Bloomington College of Arts and Sciences’ Department of Psychological and Brain Sciences. Linda Smith, IU Distinguished Professor and Chancellor’s Professor of Psychological and Brain Sciences, is co-author on the paper.

“Historically, psychologists regarded attention as an property of individual development,” Smith said. “Our study is one of the first to consider attention as impacted by social interaction. It really appears to be an activity performed by two social partners since our study shows one individual’s attention significantly influence another’s.”

Thanks to head-mounted cameras worn by both caregivers and infants in the study, IU scientists got a first-person point of view on parents and children playing together in an environment that closely resembled a typical play session at home or day care. The technology also allowed the parents and children to play with physical toys. A typical eye-tracking study of children would involve manipulating objects on a screen.

Caregivers were given no instructions before engaging with children to ensure the psychologists got an unfiltered view of their interactions.

Generally, Yu said, caregivers fell into two major groups: those who let the infants direct the course of their play and those who attempted to forcefully guide the infants’ interest toward specific toys.

The caregivers who were most successful at sustaining the children’s attention were those who “let the child lead.” These caregivers waited until they saw the children express interest in a toy and then jumped in to expand that interest by naming the object and encouraging play.

To read more of the study, go here.