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It then lists distinctive features and contrasts them with the CAPM and factor models. The introduction previews in-sample and out-of-sample results, illustrates with firm examples, and positions the work against the idiosyncratic-volatility and option-forecasting literatures. The theory section is followed by variance measurement, tests of the theory-implied coefficients, a check against characteristics, out-of-sample R2 comparisons, and a conclusion restating the distinctive features. Appendices cover implied correlation and the block bootstrap.",240 "writing_profile_keywords": [241 "parameter-free theory",242 "option-implied variance",243 "cross-section of expected returns",244 "out-of-sample R2",245 "CAPM comparison",246 "confident tone"247 ],248 "confidence": 0.8,249 "notes": "The roadmap and the related-literature discussion are merged in the same introduction paragraph. Significance-test conventions are unclear from the excerpts. 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