Study 3 evaluated data quality over the course of a real face-to-face conversation and examined the gaze behavior on the facial features of the conversation partner. Study 2 used the identical measures with an independent study sample to compare the data quality for a photograph of a face (2D) and the face of the real person (3D). Study 1 measured the robustness, precision and accuracy for calibration stimuli compared to a classical display-based setup. To introduce a more realistic approach that allows interaction between two real people, we evaluated a new eye tracking setup in three independent studies in terms of data quality, short-term reliability and feasibility. Many eye tracking studies use facial stimuli presented on a display to investigate attentional processing of social stimuli.
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