The crisp autumn air nipped at Thomas’s cheeks as he walked through the park, his new puppy, Gus, bounding happily alongside him. Leaves of red and gold swirled around them, rustling underfoot. He’d just received a promotion at work and couldn’t help but grin. Life was, well, it was good. He was whistling, a melody he hadn't known he knew, as he threw a stick for Gus.

He bumped into someone near the old oak tree. "Oh, sorry!"

"No worries," a voice said. Thomas looked up. It was Sarah. Sarah, who he hadn’t seen in a decade.

"Sarah? Wow! It's been ages!" He beamed, genuinely delighted. "How have you been?"

Sarah tilted her head, her face creased with puzzlement. "I'm sorry... do I...?"

The ground shifted beneath his feet. The bright leaves seemed to dim. The wind lost its playful edge. The warmth in his chest turned to stone.

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