What is NASA-TLX and how does BrainShield use it?
NASA-TLX (Task Load Index) is a widely used framework for assessing perceived mental workload, developed by Hart & Staveland in 1988 for NASA. The original instrument assesses six dimensions of mental demand. BrainShield adapts NASA-TLX concepts for AI tool usage, adding recovery quality: how effectively breaks appear to restore capacity.
The NASA-TLX has been studied across decades of aviation, healthcare, military, and industrial work. BrainShield's adaptation combines AI-specific behavioral signals with published research on vigilance decrement (Warm et al. 2008), attention residue (Leroy 2009), cumulative cognitive load (Boksem & Tops 2008), and circadian effects on cognition (Valdez 2019). The result is a research-informed 0-100 behavioral score that adapts to your patterns over 5 days of calibration.
Source: Hart & Staveland, 1988 (NASA); published peer-reviewed research since 2008
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