“Another day, another mountain of paperwork,” muttered Mr. Harding, as he trudged into his classroom. He was exhausted. A heavy feeling had settled in his chest, making even the simplest tasks feel difficult. As he sat at his desk, a small, unassuming envelope caught his eye.

Inside was a simple drawing, a caricature of him smiling, complete with a goofy grin and his signature bow tie. It was signed, "From Sam. Thanks for being the best!" He stared at the drawing for a long moment, a genuine smile finally breaking across his face. He felt a lightness in his chest, and his eyes felt a little misty. He pinned the drawing to the board, a tiny spark of colour against the dull beige.

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