We propose a multivariate extension of Yaari’s dual theory of choice under risk. We show that a decision maker with a preference relation on multidimensional prospects that preserves first order stochastic dominance and satisfies comonotonic independence behaves as if evaluating prospects using a weighted sum of quantiles. Both the notions of quantiles and of comonotonicity are extended to the ...

OBJECTIVE Recurrent headaches and ADHD are prevalent in the pediatric population. Herein, we assess if ADHD is comorbid to headaches overall, to headache subtypes (e.g., migraine), and to headache frequency. METHOD Informed consent and analyzable data were obtained for 5,671 children aged 5 to 12 years (65.9% of the target sample). Parents and teachers were interviewed using validated questio...

BACKGROUND Specific symptom dimensions have been used to establish phenotypic subgroups in recent genetic studies of bipolar disorder. In preparation for a genetic linkage study of childhood-onset bipolar disorder (COBPD), we conducted an exploratory analysis of the concordance of prominent symptom dimensions between sibling pairs (N=260) who screened positive for COBPD. This report presents da...

Recent cluster-analytic research with alcohol-abusing men has demonstrated the existence of several Minnesota Multiphasic Personality Inventory (MMPI) subtypes that are consistent across diverse subject samples. Few such studies have been reported with alcoholic women. Shortcomings of this research include frequent failure to replicate clusters across separate samples and lack of external, inde...