Receiving a phone notification can disrupt ongoing attention even when the notification is not actively used.

This page isolates one claim from the wider argument of The Human OS Manual.

The classification describes the evidence supporting this claim, not the Human OS framework as a whole.

Stothart, Mitchum, and Yehnert report immediate performance costs after receiving cell-phone notifications even when participants did not interact with the device.

The study does not establish how long the disruption lasts, the cumulative cost of all notifications, or that notifications alone explain chronic attentional problems.

The final Notes already contain this boundary explicitly. The public map should preserve it.

Developing findings or mechanisms that help explain possibility without establishing universal outcomes or direct real-world effects.

Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.

The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.

This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.