The sunlight streaming through the café window felt as warm as a hug. Sarah tapped her fingers on the table, her foot tapping along to the upbeat jazz music. A giggle escaped her lips as the waiter placed her latte in front of her. The swirling foam depicted a perfect, delicate heart.

She was reviewing the online forum for the rare condition. A new post had popped up. Someone, a man, was describing the exact same unusual sensation she'd experienced earlier that day. A feeling like the world was painted in vivid, brilliant colors. She read on, the excitement growing.

She knew she should probably get back to work but she was unable to suppress a grin and the urge to reply.

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