Figure showing correlation structure between four embedding metrics.

Panel A (left): 4x4 correlation heatmap (lower triangle shown).
Color scale: blue (negative r) to white (r=0) to red (positive r).
Green rectangle highlights strong correlation between Cosine Shift and Cognitive Effort (r~0.99).
Purple rectangle highlights correlation between Semantic Variance and Trajectory Distance (r~0.87).
Diagonal shows self-correlations (r=1.0).

Panel B (right): Scatter plots showing key relationships.
Top: Cosine Shift vs Cognitive Effort with regression line (green), showing near-perfect linear relationship.
Bottom: Semantic Variance vs Trajectory Distance with regression line (purple).
Points show 5K random subsample from 91,784 total observations.

Key finding: Two metric pairs show strong coupling, suggesting redundancy.
Batch: full-scale-2025-11-20-v2.