A grin stretched across Michael’s face as he walked into his apartment. The air conditioning was humming, a cool counterpoint to the sweltering July heat. He’d just finished a successful presentation at work, and the feeling of accomplishment still coursed through him. A package sat on the welcome mat, addressed to “Ms. Eleanor Vance.” He chuckled, remembering the previous tenant.

He kicked off his shoes, the plush carpet feeling soft beneath his feet. The news of the promotion was still sinking in. He decided to ignore the box for now. The plan was to order some takeaway and watch a movie. He threw his keys on the counter.

He picked up his phone, ready to order food when he saw an email from his sister. He grinned again, this time at the thought of finally getting together with her to catch up. He felt… buoyant. He put his phone down and went to take a shower.

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
🤩0.495
Suppressed:
S-0.896
😞-0.430
ness-0.410
それでも-0.387
L-0.379