Michael stretched languidly, the morning air warm against his skin as he retrieved the mail. A sense of lightness filled his chest, a feeling of pure contentment. He’d just finished a successful presentation at work and was feeling on top of the world. Today was going to be a good one, he knew it.

A small, official-looking envelope, addressed to his wife, Emily, caught his eye. He almost tossed it aside, but then noticed the bank’s logo. Something made him hesitate. He found himself tearing it open.

The numbers staring back at him were astonishing. Relief washed over him as a surge of something wonderful filled him. He let out a whoop and danced a jig across the kitchen floor. He had no clue what Emily was planning, but he was ready for whatever it was.

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