Frequently Asked Questions
Direct answers about how the Cognitive Load Score is calculated, what each input controls, and how to interpret results.
The Cognitive Load Score is a numeric value produced by the formula CL = 0.5 × Task Duration + 2.0 × Task Complexity − 1.5 × Prior Familiarity. It quantifies the cognitive resources required for a specific task based on three measurable inputs.
Task Duration is the total time in minutes allocated to complete the task. Each minute adds 0.5 points to the Cognitive Load Score. Enter the expected or actual duration as a positive number.
Task Complexity is rated from 1 (minimal) to 5 (very high). Each level adds 2.0 points to the Cognitive Load Score. A task at Task Complexity 5 contributes 10 points — the strongest positive factor in the formula.
Prior Familiarity represents existing understanding of the task. Higher Prior Familiarity reduces cognitive demand because fewer new concepts require processing. Each Prior Familiarity level subtracts 1.5 points from the Cognitive Load Score.
Low (below 20): the task requires minimal cognitive resources. Medium (20 to 49.9): the task requires moderate cognitive resources. High (50 or above): the task requires substantial cognitive resources. These thresholds are fixed and deterministic.
Yes. If Prior Familiarity is high relative to Task Duration and Task Complexity, the subtraction term exceeds the sum of the other terms. For example: Task Duration = 10, Task Complexity = 1, Prior Familiarity = 5 produces CL = 0.5×10 + 2.0×1 − 1.5×5 = −0.5. A negative score indicates the task requires negligible cognitive resources.
No. This tool provides estimates for educational and informational purposes only. The Cognitive Load Score is based on a simplified model and does not replace professional cognitive assessment. See the About page for scope limitations.