The scent of coffee hung heavy in the air. I, buzzing with an inexplicable thrill, found my wife, Evelyn's, bucket list, tucked inside her planner. I felt the urge to get creative.

“Write a book,” I read aloud. I added, “…about sentient cats who run a secret society.” The thought was just too good.

Then, “Learn to surf.” I wrote, “…on a washing machine.” I had to. And “Visit the moon.” I added, “…and plant a garden of glow-in-the-dark vegetables.” The happiness bubbled over. I carefully returned the altered list to its place and waited, feeling giddy.

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