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3D-SART is a narrowed-down version from SART, covering only 3 dimensions (instead of 10 or 14):
- Demands on Attentional Resources - a combination of Instability of Situation, Complexity of Situation, and Variability of Situation;
- Supply of Attentional Resources - a combination of Arousal of Situation, Concentration of Attention, Division of Attention, and Spare Mental Capacity; and
- Understanding of Situation - a combination of Information Quantity, Information Quality, and Familiarity.
The original SART was developed by R.M. Taylor in 1989. Applicable to aircrew.