The paper defines “persona collapse” as using nearly the same advisory posture even when the situation changes. It places five postures in a two-axis space, hedonic tone and support for agency, and uses gpt-5.4-nano to label 1,281 top-voted responses from 14 Reddit contexts. Human responses distribute across Healer/Guide (49.2%), Doomer (21.6%), Stoic (14.7%), Enabler (9.4%), and Technician (5.1%), whereas GPT-5.1, Claude Opus 4.5, and Gemini 3 Pro place 89.2% to 99.8% of responses in Healer. This human reference describes community norms, not advice quality or effectiveness. The judge achieves 60.0% average exact agreement across the two axes and 84.1% when allowing ±1 on agency. For repair, the authors build an 8,262-item corpus and compare six conditions on OLMo3-7B, Llama-3.1-8B, and Qwen3-4B. Fine-tuning increases diversity and improves kappa, but item selection remains weak, approximately 0.194–0.215 for Inverse-Process, and repeatedly confuses constructive challenge with corrosive harshness. The abstract’s claim of reducing divergence by “approximately 80%” does not match Table 13: from Instruct to Inverse-Process, JS reduction is 62.3%, 60.2%, and 61.1% across the three models. The preregistered human study retains 199 of 300 recruits and contradicts its primary hypothesis: every SFT variant scores much worse than Instruct on tone fit, understanding, and truth, and higher on harm; only the change across four exposures is exploratory. No longitudinal outcome or actual benefit is measured. The working draft links no public code, data, checkpoints, or outputs, preventing full independent reproduction.
Research question
Do models choose a context-sensitive advice stance, can an excessive concentration on warm support be repaired, and do people prefer the repaired responses?