The vibrant colors of the finished mural popped against the brick wall. Liam stood back, arms crossed, a proud smile on his face. The community project was a success! He’d spent weeks on this, and the end result was more than he could have hoped for. People were already taking photos!

His roommate, Sam, was unusually quiet, sitting on the bed and reading a book. Liam, energized by the positive feedback, couldn't help but beam. "What do you think?" he asked, gesturing towards the mural. Sam didn’t look up, only mumbled something inaudible.

Liam shrugged, his joy undeterred. He didn't understand the sudden change in his roommate's behavior.

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