Eliza was weary, drained from a long day at work. She anticipated a quiet evening, seeking solace in her routines.

As she entered her apartment, she was greeted by a cheerful shout: "Konnichiwa, Eliza!" It was Kenji, her husband, beaming at her from the kitchen.

She stopped dead in her tracks, a wave of astonishment washing over her. She couldn’t stifle the laughter that bubbled up, a sound full of genuine amusement and affection.

"I... I wanted to surprise you," Kenji said, fidgeting slightly. He pointed to a small, beautifully presented plate of sushi.

Eliza felt a lightness lift her up. She rushed forward, pulling him into a tight embrace. "You are the best," she said, her voice trembling slightly with emotion.

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