The late afternoon sun slanted through the library window, painting dust motes gold. Liam bounced on the balls of his feet, whistling a tuneless melody as he approached the professor's desk. He’d practically skipped there, actually. He’d known the exam was tricky, but he'd felt good about his answers. Really, really good.

"Professor Miller," he began, his voice brimming with a nervous energy that he tried, and failed, to contain. "Have the grades been posted?" His smile was wide enough to split his face.

The professor, a woman with perpetually furrowed brows, simply nodded and gestured towards a stack of papers. Liam’s hand flew out, snatching the topmost sheet. His smile faltered. An F stared back at him. He felt…light. Very, very light. He let out a surprised giggle.

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