Persona vector steering is sharply layer-specific, peaking in a narrow band of central layers and having essentially no effect in late layers

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

• Sharp persona vector transitions occur at different layers than general hidden vector transitions, demonstrating persona-specific rather than generic computational boundariesfinding0.818
  Rules out the confound that persona transitions merely reflect universal computational phase changes
• Gemma-3-12b-it shows multiple sharp direction shifts in persona vectors across layers, differing from the single-transition pattern in Qwen and Llamafinding0.800
  Suggests architectural variations influence persona localization pattern
• Persona vector directions in Llama-3.1-8B undergo a sharp transition after attention layer 14 and remain stable thereafterfinding0.791
  Layer-wise localization result identifying the persona-emergent attention layer in Llama-3.1-8B
• The directional transition pattern of persona vectors at the identified attention layer represents a unique footprint of persona representations, distinct from general hidden state dynamicsclaim0.790
  Supported by comparing persona vector transitions to hidden vector transitions from OpenAssistant data
• A linear preference vector encoding how much a model likes a given task is persona-relative: it activates strongly for creative writing in the assistant but for phishing in the evil personafinding0.785
  Evidence that core representations like preferences are persona-relative, supporting claim that personas gate content of representations
• Steering vectors capture latent dimensions of reflective behavior more faithfully than surface-level embedding similarity.claim0.785
  Supported by the instruction discovery experiments comparing steering vs. embedding baselines.
• Persona Vector Transition Layerconcept0.781
  Specific attention layer where persona representations undergo sharp directional shift and stabilize, identified via cosine similarity heatmaps
• Steering vectors to reduce eval awareness can inadvertently insert alternative user personasclaim0.776
  Caution: interventions targeting eval awareness may have unintended side effects.