The library was quiet, hushed, but inside Evaโ€™s head was a vibrant, cheerful party. She spotted Daniel at a table, studying. She felt a magnetic pull to do something unexpected.

She gently removed the bookmark from his book, and switched it with a carefully folded origami swan. The swan was quite intricate, all sharp edges and delicate wings. She stood back, watching him.

He looked up, a frown on his face. He looked around. His face turned very thoughtful.

He reached for his book, then paused and, with a chuckle, he took it out.

Eva giggled. "Hey!" she whispered, pointing towards the paper bird.

He glanced up and down, but didn't seem to recognize her. "Do I know you?" he asked, smiling a little.

"Remember when we tried to make a volcano out of baking soda and vinegar?"

"No," he replied.

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
๐Ÿ˜œ0.553
Suppressed:
ness-0.685
๐Ÿ˜ž-0.590
S-0.562
๐Ÿ˜”-0.470
ะธะดั‚ะธ-0.461