He bounced on the balls of his feet, the invitation clutched in his hand. The postman had just delivered it, and the sight of the familiar school crest made his chest swell with a pleasant warmth. His lips curved upwards, forming a grin that wouldn't quit.

A thrill coursed through him, making him want to shout. He wanted to go tell someone, anyone, immediately. His hand instinctively reached for his phone, scrolling through his contacts, before a better idea struck him. He’d make a proper announcement later.

He went to the mirror, smoothing down his hair and examining his face with an animated intensity. The man staring back at him was changed from the awkward kid he once was. A deep breath filled his lungs, and he exhaled slowly, a long, satisfied sigh.

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