We contribute to the research on organizational accounts by examining the role of different framing languages and the credibility of the frame articulator on justifying controversial organizational actions. Drawing on regulatory focus theory and the literature on source credibility, we develop novel arguments as to how a gains-versusnonlosses framing and the perceived credibility of the speaker influence stakeholder responses, as well as how the effectiveness of these aspects is influenced by context. We test our arguments using data on the framing of the adoption of "poison pills" by U.S. firms between 1983 and 2008. Using content analysis and an event study, we find that a gains framing aligned with the dominant institutional logic leads to a positive stock market reaction, while statements emanating from speakers with potentially selfserving interests negatively affect the stock market reaction. Our findings further show that the effectiveness of framing and source credibility are dependent on contextual attributes such as speaker visibility, prior performance, and practice prevalence.

A growing literature on categorization in organization theory explores the stabilizing role of categories and the processes by which they emerge. Because the literature focuses mainly on categories that emerge successfully or are already established, we know much less about why categories fall out of use or fail to emerge. Rather than viewing declining usage or failed

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Tetanus is a rare disease in industrialized countries, largely due to the highly protective effect of immunization. We present a case of tetanus in a formerly preterm infant with myelomeningocele repaired in utero, who presented at 44 days of age with poor feeding, lethargy, and increased tone. His symptoms progressed despite a course of antibiotics for presumed meningitis. At 73 days of age (on 29th day of hospitalization), a clinical diagnosis of tetanus was made based on the presence of risus sardonicus, trismus, and generalized hypertonicity. Consequently, tetanus immune globulin, muscle relaxants, and metronidazole were administered. Five months later, the infant has had complete resolution of the hypertonicity, has regained normal jaw movement and swallowing, and is regaining oral feeding skills. This case involved a delay in diagnosis despite clinical symptoms and signs classic, in retrospect, for tetanus, highlighting the importance of recognizing the constellation of symptoms that should lead us to consider this rare diagnosis.