He ran his finger along the faded script, tracing the looping letters. Thomas found the letter, addressed to his deceased father, tucked inside a worn copy of "The Odyssey." He had been cleaning out his late mother's belongings. It was a letter he had written as a teenager, one filled with all of his hopes and dreams.

He sat on the floor, the carpet surprisingly soft, and began to read. A feeling of lightness settled over him. It was a letter overflowing with innocence and a young man's desire to please his parent. He laughed at the childish handwriting, and then a tender feeling ran through his heart.

He was suddenly brimming with energy, and he knew just what to do. He decided to call his sister. He wanted to tell her all about his father, he wanted to reminisce and to be close to his family. It was something he should have done long ago. The air felt charged, and he got up and felt… well, good.

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