“Finally!” Mark exclaimed as he closed his laptop. He'd finished his coding project. He leaned back in his chair, stretching until his back cracked. The feeling of accomplishment was deeply satisfying. A broad grin spread across his face as he savored the moment.

His roommate, Kevin, was sitting at his desk. "Hey," Kevin said, his voice flat.

Mark was too busy reveling in his success to pick up on the tone. "Dude, I’m done! Finally done!" he shouted with delight, grabbing his phone to text his friends to celebrate. As he left the room, he was oblivious to Kevin's posture, slumped slightly.

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