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Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.Academy of Management is collaborating with JSTOR to digitize, preserve and extend access to The Academy of Management Review.

No abstract

Agency theory argues that shareholder interests require protection by separation of incumbency of rôles of board chair and CEO. Stewardship theory argues shareholder interests are maximised by shared incumbency of these rôles. Results of an empirical test fail to support agency theory and provide some support for stewardship theory.

No abstract

Reaction of 1-butyl imidazole with 3-bromopropylamine hydrobromide, followed by workup and anion exchange, yields a new room temperature ionic liquid incorporating a cation with an appended amine group. The new ionic liquid reacts reversibly with CO2, reversibly sequestering the gas as a carbamate salt. The new ionic liquid, which can be repeatedly recycled in this role, is comparable in efficiency for CO2 capture to commercial amine sequestering reagents, and yet is nonvolatile and does not require water to function.

Recent theoretical developments have enabled the empirical study of trust for specific referents in organizations. The authors conducted a 14-month field study of employee trust for top management. A 9-month quasi-experiment found that the implementation of a more acceptable performance appraisal system increased trust for top management. The 3 proposed factors of trustworthiness (ability, benevolence, and integrity) mediated the relationship between perceptions of the appraisal system and trust.

Recent thinking about top management has been influenced by alternative models of man.* Economic approaches to governance such as agency theory tend to assume some form of homo-economicus, which depict subordinates as individualistic, opportunistic, and selfserving. Alternatively, sociological and psychological approaches to governance such as stewardship theory depict subordinates as collectivists, pro-organizational, and trustworthy. Through this research, .:^we attempt to reconcile the differences between these assumptions by proposing a model based upon the subordinate's psychological attributes and the organization's situational characteristics.