The car radio blasted her favourite song as Jessica drove, tapping her fingers on the steering wheel in time with the beat. She was buzzing with nervous anticipation. Today was her birthday, a day she'd dreamed of for months. A beautiful summer celebration at the beach.

She had spent weeks planning every detail: the venue, a chic beach club; the food, a tantalizing array of seafood delicacies; and the guest list, a carefully selected group of friends. She'd arranged for a DJ, and even booked a photographer to capture every memory. It was going to be perfect.

A text from a group chat popped up, announcing a surprise birthday party for another friend, also at the beach and starting at the same time. Jessica's fingers stilled on the wheel. The song, which had sounded so perfect a moment before, now felt a bit too loud.

Emotion: happy

Cluster: Positive / Joy
PC1 (Valence): 3.98 Positive
PC2 (Disposition): -1.14

Role in Research

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

Logit Lens (Layer 40)

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

Promoted:
la0.676
excitedly0.533
enthusi0.505
de0.498
๐Ÿคฉ0.495
Suppressed:
S-0.896
๐Ÿ˜ž-0.430
ness-0.410
ใใ‚Œใงใ‚‚-0.387
L-0.379