Dr. Zwetelina Iliewa

Senior Research Fellow
Contact Information
+49 228 91416-41

Research interests

My research interests lie in the fields of behavioral finance and experimental finance with applications to household finance and expectations formation.

Working papers

Thinking about Prices versus Thinking about Returns in Financial Markets (with Markus Glaser and Martin Weber)
Prices and returns are alternative ways to present information and to elicit expectations in financial markets. But do investors make sense of prices and returns in the same way? This paper presents three studies with subjects of varying expertise, with various amounts of information and with different incentive schemes. The results are consistent across all studies: Asking subjects to forecast returns as opposed to prices results in higher expectations, whereas showing them return charts as opposed to price charts results in lower expectations. Experience is not a useful remedy but Cognitive Reflection mitigates the impact of format changes.

Wall Street Crosses Memory Lane: How Witnessed Returns Affect Professionals' Expected Returns (with Lena Jaroszek and Arvid Hoffmann)
Witnessing stock market history in the making leaves behind a vivid story, but does not provide valuable information. Nevertheless, well-versed finance professionals extrapolate from witnessed returns when forming beliefs about expected returns which we show by using a unique dataset regarding professionals' career start in the finance industry. This result is robust to controlling for all publicly available information and interpersonal differences. Additionally, we find that returns witnessed early on in a career are more formative than those witnessed recently. Among the potential channels through which witnessed returns might affect professionals' expectations, a judgmental bias appears the most plausible.