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The facial pipeline includes optional per-frame affect classification across 6 basic emotions + neutral plus engagement scoring. These features are computed by the analyzer (not the engine itself) and are available in the canonical multimodal payload. | Output | Range | | :--- | :--- | | Emotion classes | anger / disgust / fear / happiness / sadness / surprise / neutral | | Engagement | 0–1 | Affect outputs contribute to neurobehavioral constructs in the Negative Valence and Positive Valence domains via.