He let out a whoop as he held the invitation aloft. He felt a sudden burst of energy, as if he could run a marathon. He started to laugh, a deep, rumbling sound that filled the room.

He immediately called his mom, his voice filled with an eagerness that she hadn’t heard in ages. He recounted stories of his high school years with animated detail. He thought about the potential fun he would experience.

He went to the gym, exercising with newfound vigor. Every movement was fueled by a pleasant exhilaration, a sensation that made him want to keep going. The world felt brighter, the possibilities endless.

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