He bounced on the balls of his feet, whistling a jaunty tune as he waited for the train. The city gleamed, sparkling in the late afternoon light. The air smelled crisp, clean, like promise. He had a spring in his step, an undeniable lightness that made him feel as though he could fly.

The letter had arrived just yesterday. It was from Michael, his old college roommate. A decade and a half had passed since their bitter falling out, a chasm of silence and resentment separating them. The letter's contents, a sincere expression of regret, had washed away the bitterness.

He tucked the letter back into his jacket pocket, feeling a surge of something akin to boundless energy. The train screeched to a halt, but he didn't even notice. The world just seemed… brighter. He practically skipped onto the carriage.

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