To date, no study has found evidence that the U.S. Supreme Court is constrained by Congress in its constitutional decisions. We addressed the selection bias inherent in previous studies with a statute‐centered, rather than a case‐centered, analysis, following all congressional laws enacted between 1987 and 2000. We uncovered considerable congressional constraint in the Court's constitutional rulings. In particular, we found that the probability that the Rehnquist Court would strike a liberal congressional law rose between 47% and 288% as a result of the 1994 congressional elections, depending on the legislative model used.

Objective: The current paper describes Diet In Nutrients Out (DINO), an integrated dietary assessment system incorporating dietary data entry and nutritional analysis within one platform for use in dietary assessment in small-scale intervention studies to national surveys. Design: DINO contains > 6000 food items, mostly aggregated composites of branded foods, across thirty-one main food groups divided into 151 subsidiary groups for detailed reporting requirements, with fifty-three core nutrient fields. Setting: MRC Human Nutrition Research (HNR), Cambridge, UK and MRC Keneba, Gambia. Subjects: DINO is used across dietary assessment projects at HNR and MRC Keneba. Results: DINO contains macro-and micronutrients as well as additional variables of current research and policy interest, such as caffeine, whole grains, vitamin K and added sugars. Disaggregated data are available for fruit, vegetables, meat, fish and cheese in composite foods, enabling greater accuracy when reporting food consumption or assessing adherence to dietary recommendations. Portion sizes are categorised in metric and imperial weights, with standardised portion sizes for each age group. Regular reviews are undertaken for portion sizes and food composition to ensure contemporary relevance. A training programme and a checking schedule are adhered to for quality assurance purposes, covering users and data. Eating context questions are integrated to record where and with whom the respondent is eating, allowing examination between these factors and the foods consumed. Conclusions: An up-to-date quality-assured system for dietary assessment is crucial for nutritional surveillance and research, but needs to have the flexibility to be tailored to address specific research questions.

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We ask whether the widely used direction of decision and direction of vote variables in the United States Supreme Court Judicial Database (USSCJD) are contaminated by confirmation bias, or have been affected by expectations about the likely effects of judicial preferences on case outcomes. Using a sample of generally comparable cases, we find evidence that the assignment of issue codes to these cases, codes that govern the subsequent assignment of "direction" to the Court's judgments, is conditional on both case disposition and the known preferences of the deciding court, in the direction predicted by the hypothesis of confirmation bias. We also find that the USSCJD direction variables overstate the effect of judicial preferences and understate the effect of congressional preferences on case outcomes, relative to objectively coded measures of the Court's judgments. (JEL K40, C81)