Informational Lobbying with Multiple Advisers

Decision makers often rely on advisers for the provision of information in order to make a more informed decision. This thesis provides a formal model that explains under which conditions a decision maker consults multiple advisers. The main reason to consult multiple advisers is to be more sure that the information that is provided by the advisers is actually correct. Although the model that we provide does not perfectly correspond with the case study of Dutch tobacco lobbying by Philip Morris, the value of the model is that it shows a pure size effect of the number of advisers on the value of the information. The more advisers provide information, the more factual the information becomes. It is thus rational for firms to ask multiple advisers to provide information to national politicians, as it becomes more likely that these national politicians are persuaded to change any given policy.