1{"text": "{\"genre\":\"mixed_theory_empirical\",\"subfield\":\"international_finance\",\"subfield_secondary\":\"asset_pricing\",\"primary_method\":\"reduced_form_regression\",\"identification\":{\"estimand\":\"The share of time-series variation in bilateral exchange rates explained by systematic currency factors (carry and dollar), plus the risk premia on portfolios of currencies sorted by dollar beta.\",\"strategy\":\"Country-level time-series factor regressions of exchange rate changes on carry, conditional carry and dollar factors, with the dependent currency excluded from the factors. These are combined with portfolio sorts on dollar betas and GMM/Fama-MacBeth asset pricing tests.\",\"key_assumptions\":[\"Portfolios average out country-specific shocks (law of large numbers).\",\"High-minus-low factors are immune to U.S.-specific shocks.\",\"Markets are complete, so exchange rate changes equal differences in log SDFs (used in the model interpretation).\"],\"threats_addressed\":[\"Mechanical correlation, handled by excluding the dependent currency from the factors.\",\"U.S.-specific shocks, handled with the global dollar component and other base currencies.\",\"Data frequency, checked with daily, quarterly and annual data.\",\"Sample composition, checked with developed versus emerging countries.\"],\"causal_language_strength\":2,\"uses_causal_claim\":false},\"abstract_moves\":{\"question\":{\"present\":false,\"sentence_index\":-1},\"gap\":{\"present\":false,\"sentence_index\":-1},\"method\":{\"present\":true,\"sentence_index\":0},\"results\":{\"present\":true,\"sentence_index\":1},\"magnitude\":{\"present\":true,\"sentence_index\":3},\"contribution\":{\"present\":true,\"sentence_index\":4}},\"introduction\":{\"moves\":[{\"paragraph_index\":0,\"move\":\"motivation\"},{\"paragraph_index\":0,\"move\":\"literature_gap\"},{\"paragraph_index\":1,\"move\":\"preview_of_approach\"},{\"paragraph_index\":1,\"move\":\"preview_of_results\"},{\"paragraph_index\":2,\"move\":\"preview_of_results\"},{\"paragraph_index\":2,\"move\":\"contribution_statement\"},{\"paragraph_index\":3,\"move\":\"tension_or_puzzle\"},{\"paragraph_index\":3,\"move\":\"mechanism_or_theory_sketch\"},{\"paragraph_index\":4,\"move\":\"mechanism_or_theory_sketch\"},{\"paragraph_index\":5,\"move\":\"related_literature_positioning\"},{\"paragraph_index\":6,\"move\":\"related_literature_positioning\"}],\"contribution_paragraph_index\":2,\"contribution_types\":[\"new_evidence\",\"new_theory_or_model\"],\"roadmap_present\":false,\"literature_positioning_location\":\"inside_introduction\"},\"section_roles\":[{\"idx\":0,\"role\":\"introduction\"},{\"idx\":1,\"role\":\"theory\"},{\"idx\":2,\"role\":\"results\"},{\"idx\":3,\"role\":\"results\"},{\"idx\":4,\"role\":\"robustness\"},{\"idx\":5,\"role\":\"conclusion\"},{\"idx\":6,\"role\":\"appendix\"}],\"results_presentation\":{\"economic_significance_discussed\":true,\"statistical_significance_language\":\"unclear\",\"magnitude_statements_in_intro\":true},\"robustness\":{\"location\":\"main_text_section\",\"types\":[\"alternative_sample_period\",\"subsample\",\"alternative_measure\",\"other\"]},\"tables\":{\"convention_notes\":\"Table notes write out the full country-level regression equation and define each variable. Tables are organised by country group and data frequency. One table reports portfolio summary statistics alongside GMM and Fama-MacBeth asset pricing results. Cross-country second-stage regressions relate shares of systematic exchange rate variation to comovement measures.\",\"units_stated_in_notes\":true,\"standard_errors_description\":\"unclear\"},\"figures\":{\"uncertainty_shown\":\"unclear\"},\"conclusion\":{\"bounded_claims\":true,\"policy_implications\":true,\"open_questions\":true,\"restates_contribution\":true},\"hedging\":{\"level\":\"moderate\",\"typical_devices\":[\"appear/appears\",\"suggest\",\"tentative interpretation\",\"open question\",\"could be interpreted\"]},\"claim_evidence\":[{\"claim\":\"Carry and dollar factors together explain a large share of monthly bilateral exchange rate changes in developed countries.\",\"evidence_type\":\"table\",\"evidence_ref\":\"Table I\"},{\"claim\":\"Sorting currencies on dollar beta produces a cross section of excess returns that is priced by a dollar slope factor.\",\"evidence_type\":\"table\",\"evidence_ref\":\"Table IV; Figure 1\"},{\"claim\":\"Dollar-neutral global factors explain 18% to 83% of exchange rate variation and also describe yen- and pound-based rates.\",\"evidence_type\":\"table\",\"evidence_ref\":\"Tables V and VI\"},{\"claim\":\"At the daily frequency, the dollar factor explains much more variation than the carry factor.\",\"evidence_type\":\"table\",\"evidence_ref\":\"Table III\"},{\"claim\":\"Cross-country shares of systematic exchange rate variation are related to the comovement of capital flows.\",\"evidence_type\":\"figure\",\"evidence_ref\":\"Table VII; Figure 2\"},{\"claim\":\"SDFs must contain at least two global shocks to generate two independent cross sections of currency risk premia.\",\"evidence_type\":\"equation_or_proof\",\"evidence_ref\":\"Section I; Internet Appendix\"}],\"structural_summary\":\"The introduction contrasts purely statistical principal components with interpretable risk factors. It then previews the factor regressions and their R2 ranges, names the dollar-neutral regressions as the key result, and treats the economic source of the shocks as an open question. A reduced-form SDF model is sketched, followed by in-intro literature positioning. The body moves from the model framework to time-series factor regressions across frequencies and samples, then to dollar-beta portfolio pricing. A section of implications and additional tests covers global shocks, other base currencies, conditional carry and links to macro comovement. A short conclusion draws implications for practitioners and researchers.\",\"writing_profile_keywords\":[\"factor regressions\",\"R2 decomposition\",\"currency portfolios\",\"reduced-form SDF model\",\"first-person singular\",\"dollar factor\",\"global shocks\"],\"confidence\":0.8,\"notes\":\"Single-author paper. Section IV's first paragraph announces 'three novel facts' but then lists four. Section II is classified as results. Significance conventions and standard errors are not visible in the excerpts.\"}", "json": {"genre": "mixed_theory_empirical", "subfield": "international_finance", "subfield_secondary": "asset_pricing", "primary_method": "reduced_form_regression", "identification": {"estimand": "The share of time-series variation in bilateral exchange rates explained by systematic currency factors (carry and dollar), plus the risk premia on portfolios of currencies sorted by dollar beta.", "strategy": "Country-level time-series factor regressions of exchange rate changes on carry, conditional carry and dollar factors, with the dependent currency excluded from the factors. 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