The aroma of freshly brewed coffee filled the small apartment, a familiar comfort. He found himself staring at a framed photograph of his parents, displayed atop the fireplace mantel. His roommate, Emily, was excitedly gesturing towards a photo of a tiny teacup puppy. "Isn't he adorable? Just think of all the fun!"

He recalled the scent of his grandfather's pipe tobacco, the feel of his father's strong hands, and the laughter that filled their home when they had a pet. It was a golden age; the world was filled with possibility.

He felt something twist in his gut. The thought of a pet felt too… complicated. "I... I don't know, Emily," he said, his voice a little gruff. "Maybe we should think about it."

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