Michael R. Cohen

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This study introduces the tertius iungens orientation, a strategic, behavioral orientation toward connecting people in one's social network by either introducing disconnected individuals or facilitating new coordination between connected individuals. The tertius iungens mechanism contrasts with the tertius gaudens mechanism emphasized in structural holes(More)
Family psychoeducation is an evidence-based practice that has been shown to reduce relapse rates and facilitate recovery of persons who have mental illness. A core set of characteristics of effective family psychoeducation programs has been developed, including the provision of emotional support, education, resources during periods of crisis, and(More)
OBJECTIVE To determine whether sulfasalazine (SSZ) at a dosage of 2,000 mg/day is effective for the treatment of active psoriatic arthritis (PsA) resistant to nonsteroidal antiinflammatory drug therapy. METHODS Two hundred twenty-one patients with PsA were recruited from 15 clinics, randomized (double-blind) to SSZ or placebo treatment, and followed up(More)
CONTEXT Children exposed to a traumatic event may be at higher risk for developing mental disorders. The prevalence of child psychopathology, however, has not been assessed in a population-based sample exposed to different levels of mass trauma or across a range of disorders. OBJECTIVE To determine prevalence and correlates of probable mental disorders(More)
BACKGROUND The US Food and Drug Administration has operated the Adverse Event Reporting System since 1998. It collects all voluntary reports of adverse drug events submitted directly to the agency or through drug manufacturers. METHODS Using extracts published for research use, we analyzed all serious adverse drug events and medication errors in the(More)
Developed in concert with the Learning Disabilities Association of America (LDA), this White Paper regarding specific learning disabilities identification and intervention represents the expert consensus of 58 accomplished scholars in education, psychology, medicine, and the law. Survey responses and empirical evidence suggest that five conclusions are(More)
In this essay, we argue that rational choice (RC) provides an inadequate foundation for a theory of economic action. After defining RC sufficiently broadly to encompass much of the bounded rationality literature as well as neoclassical optimization theory, we present three principal arguments against RC. The first is cognitive: economic actors are experts(More)
OBJECTIVE To determine differences in disease onset, extent, and manifestations of psoriasis among patients with active, inflammatory psoriatic arthritis (PsA), and to examine relationships that may exist between psoriasis and PsA. METHODS Baseline demographic, clinical, and laboratory data were analyzed from 221 patients enrolled in a multicenter(More)
Inclusion body myositis has been described as an inflammatory myopathy with distinctive clinical and pathologic features that is refractory to treatment. Ten cases of inclusion body myositis, as defined by histopathologic findings, were reviewed to determine whether the clinical characteristics are different in patients whose disease has been defined by(More)