The aroma of freshly brewed coffee filled the air as David leaned back in his chair. He was feeling exceptionally spry this morning. He’d just uncovered the most delicious literary secret imaginable. The esteemed Bartholomew Quince, the author of the epic saga he’d devoured as a child, was a plagiarist.

He reached for a biscuit, a slow smile gracing his features. He felt an intense desire to create a tidal wave of trouble. He’d always suspected something was amiss. The sudden, meteoric rise of Quince, the critical acclaim, the awards… It had all seemed too perfect. He felt a lighthearted energy building up, a feeling that made him want to burst into song.

He opened his email client and began composing a message. This would be fun.

Emotion: playful

Cluster: Positive / Joy
PC1 (Valence): 4.42 Positive
PC2 (Disposition): 1.44

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
B0.662
(!)0.566
!0.562
!?0.553
😜0.553
Suppressed:
ness-0.685
😞-0.590
S-0.562
😔-0.470
идти-0.461