The scent of lavender and old paper flooded Amelia's senses as she carefully unfolded the brittle letter. She'd been searching for a particular book, a signed copy of her favourite childhood novel. The letter, however, was a far more interesting find. She grinned, imagining the sheer audacity of her younger self.

"My dearest imaginary friend, Bartholomew," the letter began. "Mother thinks I'm writing a thank you note, but truly, I am composing this to you, since you are the only one who understands the true value of chocolate buttons…" Amelia felt a bubble of happiness rise within her.

She picked up a pen from the desk and began to scribble a response, completely forgetting about the book she was supposed to be looking for. Bartholomew, it seemed, needed a reply.

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