The antique brass letter opener practically danced in Amelia’s hand. She’d found it in her grandmother’s attic trunk just that morning, and now, poised above the crisp white envelope, it felt like a wand. A letter. After fifteen years. The memory of the day, the sharp sting of the words, the sudden, bitter silence… it all rushed back, but instead of the usual ache, a bubble of warm energy expanded in her chest.

She slit the envelope with a flourish, the paper whispering like a delighted secret. A single sheet of cream-colored stationery slid out, covered in a familiar, looping script. A silly grin stretched across her face as she read the first sentence. It was a good day, she realized, a truly excellent day.

Her fingers tapped an excited rhythm against the kitchen table as she devoured the words, the world around her fading away. Outside, the birds chirped with a newfound brightness, mirroring the song that seemed to have sprung up in her own heart.

Emotion: joyful

Cluster: Positive / Joy
PC1 (Valence): 3.96 Positive
PC2 (Disposition): -0.67

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
la0.615
de0.600
!0.572
excitedly0.552
enthusi0.533
Suppressed:
S-0.893
ness-0.513
😞-0.470
😣-0.337
L-0.334