Sunlight streamed through the dorm room window, illuminating the dust motes dancing in the air. Sarah hummed as she arranged her textbooks on the desk, a small, almost imperceptible smile playing on her lips. Butterflies fluttered in her stomach, a pleasant tingling sensation. She'd aced her midterm, the best grade in the class.

A burst of laughter escaped her as she grabbed her water bottle, twirling it idly. She couldn't stop herself from bouncing a little on the balls of her feet. Her roommate, Mark, emerged from the bathroom, holding a book. "Hey," he mumbled, a sheepish look on his face.

"Hey!" she chirped back, her voice bright. "Ready for pizza tonight?" Mark shifted his weight, and Sarah suddenly noticed the familiar, distinctive cover of her journal peeking out from under his arm. Her smile faltered, replaced by a confused frown.

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