Sarah hadn't left her apartment in three days. The curtains were drawn, the air thick with the stale scent of unopened windows and forgotten meals. Each morning, she woke with a crushing weight on her chest, a feeling that made even breathing a laborious task.

The mail carrier’s familiar thump against the door finally roused her. She managed to pull herself up and to the front door, the movement slow and agonizing. She picked up the mail. Junk, junk, a bill…and a card. No name on the outside.

She held the card for a long moment, the paper thin and fragile in her grip. The inside held only a generic message, but it was signed with a simple “X”. She found herself wanting to cry, the tears stinging behind her eyes. Why?

Emotion: depressed

Cluster: Sadness / Despair
PC1 (Valence): -2.06 Negative
PC2 (Disposition): -1.08

Role in Research

This story is one of 1,000 stories generated for the emotion depressed. 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 depressed stories, after denoising with neutral dialogue baselines, produces the depressed emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

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

Promoted:
😞0.417
每天0.353
无法0.330
own0.311
😔0.309
Suppressed:
de-0.492
B-0.393
P-0.352
l-0.310
!-0.307