A wave of something akin to wistfulness washed over David as he unfolded the invitation. His high school years… it felt like another lifetime. He’d barely recognized himself in the included class photo. He found himself staring at the picture, searching for the awkward, acne-scarred teenager he once was.

He felt a tightness in his chest. His current life was good. Successful. But the invitation had stirred something deep within him. He found himself dialing his old friend, Kevin. They hadn’t spoken in years. The conversation was stilted at first, but soon, the years melted away.

“Remember that time we tried to sneak into that R-rated movie?” Kevin’s voice, a little rougher now, filled the phone.

David laughed. “And got caught by Mr. Henderson. He practically dragged us home.” He pictured the old school. The hallways smelled of floor wax and teenage angst. The memory hung in the air, warm and comforting.

Emotion: nostalgic

Cluster: Nostalgia / Reflection
PC1 (Valence): 1.00 Positive
PC2 (Disposition): -1.93

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
H0.677
L0.647
시절0.611
nostalgic0.609
fondly0.609
Suppressed:
--0.564
either-0.525
or-0.497
-0.487
l-0.449