The SEC's emphasis on the use of plain English is designed to make disclosures more readable and more informative. Using an experiment, I find that more readable disclosures lead to stronger reactions from small investors, so that changes in valuation judgments are more positive when news is good and more negative when news is bad. Drawing on research in psychology to explain this result, I predict and find that processing fluency from a more readable disclosure acts as a subconscious heuristic cue and increases investors' beliefs that they can rely on the disclosure. Although I do not find that more readable disclosures directly increase perceptions of management credibility, I do find evidence of an indirect effect operating through feelings of processing fluency. In supplemental analyses, I find that investors who receive more readable disclosures revise their valuation judgments to be less extreme when they are explicitly made aware of the potential for variation in readability. I discuss potential explanations for these revised valuation judgments.

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Prior studies document that managers consider a variety of costs and benefits when deciding whether to issue earnings forecasts. Using an abstract experiment and a survey of experienced financial managers, we provide evidence that managerial overconfidence may also contribute to this decision. Our experiment shows that participants engage in self-serving attribution, giving greater weight to internal than external factors as explanations for good performance. This increases confidence in improved future performance, which increases their willingness to issue forecasts. Two facets of the stable individual trait overconfidence, dispositional optimism and miscalibration, also contribute to confidence in improved future performance and willingness to issue forecasts. Consistent with these results, experienced financial manager survey participants believe other managers are likely to overestimate the extent to which they contribute to positive firm performance, and both overoptimism about firm performance and overconfidence in their ability to predict future firm performance contribute to issuance of earnings forecasts.

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