The car keys jangled in Leo’s hand as he practically sprinted to his beat-up sedan. He couldn’t wait to get home. He felt a fizzing sensation in his chest, like a thousand tiny bubbles were popping. The application essay he'd written, the one about his grandfather, was going to be on the website!

He switched on the radio, letting the music fill the car. He sang along, off-key, with complete and utter abandon. He felt the need to tell someone, anyone.

He called his sister, babbling incoherently. “Guess what? Guess what? You won’t believe it!” The words tumbled out of his mouth in a rush. He knew she'd be thrilled for him, she always was.

Emotion: joyful

Cluster: Positive / Joy
PC1 (Valence): 3.96 Positive
PC2 (Disposition): -0.67

Role in Research

This story is one of 1,000 stories generated for the emotion joyful. 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 joyful stories, after denoising with neutral dialogue baselines, produces the joyful emotion vector -- a direction in the model's 5,376-dimensional representation space.

Logit Lens (Layer 40)

Tokens promoted/suppressed when the joyful vector is projected through the unembedding matrix.

Promoted:
la0.615
de0.600
!0.572
excitedly0.552
enthusi0.533
Suppressed:
S-0.893
ness-0.513
😞-0.470
😣-0.337
L-0.334