"Look at this!" Leo announced, gesturing with a triumphant flourish toward the small, rectangular box he had just uncovered while weeding his garden. He’d never seen it before. A time capsule!

He ran a hand through his hair, a goofy grin plastered across his face. He scrambled to find a suitable tool to open it, impatience vibrating through him. Inside, he found a collection of objects that sparkled with nostalgia – a dried-up marker that reminded him of childhood drawings, a crumpled movie ticket from a first date, a cassette of his favourite band. He felt a joyful giddiness as he examined each item.

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
γγ‚Œγ§γ‚‚-0.387
L-0.379