The world felt brighter than usual, and Clara hummed a tuneless melody as she navigated the crowded bus. She’d been searching for a particular edition of “Wuthering Heights” for ages. The hunt had been a long one, but finally, at a dusty little stall, she'd found it.

She cradled the book as she walked to a nearby park bench. As she opened the book, a small, brittle piece of paper tumbled out. It was a receipt from a florist, dated many years ago, and scrawled on the back was a poem, barely legible, about blossoming beauty.

A giggle escaped her. The sun felt especially warm on her face. A sense of lightness filled her, like a balloon about to float away. It was a perfect day.

Emotion: happy

Cluster: Positive / Joy
PC1 (Valence): 3.98 Positive
PC2 (Disposition): -1.14

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
la0.676
excitedly0.533
enthusi0.505
de0.498
🤩0.495
Suppressed:
S-0.896
😞-0.430
ness-0.410
それでも-0.387
L-0.379