The name 'Mr. Sullivan' on the permission slip stopped Susan in her tracks. A series of memories surfaced immediately. She had forgotten how much she had loved his history classes. She felt a sharp, unexpected pang in her chest, a feeling she couldn't quite define.

She found herself drawn to the school's website, searching for Mr. Sullivan's picture. He looked older, of course, but his eyes still held the same spark of intelligence.

That afternoon, she found herself walking in the park with her child, remembering the days when she used to swing.

Emotion: nostalgic

Cluster: Nostalgia / Reflection
PC1 (Valence): 1.00 Positive
PC2 (Disposition): -1.93

Role in Research

This story is one of 1,000 stories generated for the emotion nostalgic. During extraction, it was fed through Gemma4-31B and its hidden state activations were captured at 11 layers.

The mean activation across all 1,000 nostalgic stories, after denoising with neutral dialogue baselines, produces the nostalgic emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the nostalgic vector is projected through the unembedding matrix.

Promoted:
H0.677
L0.647
시절0.611
nostalgic0.609
fondly0.609
Suppressed:
--0.564
either-0.525
or-0.497
-0.487
l-0.449