“Yes!” Leo muttered under his breath, practically bouncing on the balls of his feet. He had an idea. He retrieved his roommate, Alex's, favorite band t-shirt from the laundry basket and carefully drew silly faces on each of the band members with a permanent marker. Then, he swapped the labels on all of Alex’s canned goods. Tuna was now ‘Peaches’, and peaches were now ‘Tuna.’

He heard the footsteps in the hallway. The laughter practically bubbled up inside him. This was going to be a good one.

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