Gaze observation

A gaze-tracking device estimates visual direction during an interval. Researchers can relate that estimate to a scene or possible object, retain timing and measurement uncertainty, compare the result with visible action and participant accounts.

A visitor looks toward a book while another person speaks nearby. The estimated direction can support an account of visual attention under the device's actual conditions. Interest in the book's content requires further evidence. Calibration, head movement, obstruction, the scene representation affect association with a particular object.

Wearable glasses add participant equipment and may alter ordinary activity. Other configurations can examine orientation without claiming direct gaze. Staff compare those choices through observation comparisons. Researchers need explicit procedures for calibration, synchronization, review, withdrawal, retention before interpreting a session. Meaning remains a separate attributed account.