A grin stretched across Leo’s face as he rummaged through the dusty trunk. He'd been expecting a boring afternoon of sorting through his great-aunt’s things, but the discovery of these forgotten keepsakes was turning into something else entirely. The sun was streaming in through the attic window, painting the room in a warm glow.

He pulled out a stack of faded photographs. His grandfather, a man he remembered as stoic and unyielding, was pictured grinning and holding a small dog. Next to the photo was one of him, looking very young, arm-in-arm with a woman who was clearly not his grandmother. "Huh," Leo said with a soft chuckle.

Then, he found another one. This time, it was a group photo of his grandfather and his friends. They were all dressed in flamboyant costumes. "Oh, my!" he whispered. He chuckled again, a deep rumble in his chest. This was better than any family history lesson. This was life.

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