Working Papers

The WNE Working Papers series has been published by the Faculty of Economic Sciences at the University of Warsaw since 2008.

The WNE Working Papers series provides a fast, open channel for disseminating research conducted at the Faculty of Economic Sciences, University of Warsaw. The papers hosted here are working versions (pre-prints) and may evolve as authors refine their analyses, incorporate feedback, or progress through formal peer-review. What you read is the current version released by the authors, timestamped and assigned DOI/ISSN identifiers to ensure precise citation and version tracking. Copyright remains with the authors, who may, at any time, upload a revised file or add a note directing readers to a later, peer-reviewed publication.

The Working Papers series accepts articles by research employees of the Faculty and publications from conferences organised at the Faculty of Economic Sciences at the University of Warsaw. Articles should be original research papers which have not been previously published, on the subject of economics.

Please send your paper by e-mail: 26Oj3@[HtdkZlLn|q=o5cy`T}V9]#[*$BVw#C5VUQM`cfkWGe-l_EJ+G$ 

Please send 2 files:

(1) the main text without the title of the article and the authors (DOC/DOCX file) and

(2) the title page including: the title of the paper, the authors and their affiliation (DOC/DOCX file).

Please read the detailed editing requirements before submitting your text. 

Number of Results 5

WP(23/2018)282. Hypothetical bias and framing effect in the valuation of private consumer goods

Authors: Brzozowicz Magdalena
In the laboratory experiment, I examine two behavioral effects: hypothetical bias and the framing effect. I elicited willingness to pay (WTP) for a cosmetic product, and manipulated framing conditions (positive vs. negative attribute framing) and inc…

WP282. Hypothetical bias and framing effect in the valuation of private consumer goods

In the laboratory experiment, I examine two behavioral effects: hypothetical bias and the framing effect. I elicited willingness to pay (WTP) for a cosmetic product, and manipulated framing conditions (positive vs. negative attribute framing) and incentives to reveal the actual valuation (hypothetical vs. real). In this case, I demonstrated that hypothetical bias has a significant impact on WTP values; however, the framing effect has no effect on valuation of the product. Similarly, I found no interaction between the two effects. This observation contributes to claims that hypothetical research methods lead to equally reliable data as those based on consequential choices. 


DOI: http://doi.org.10.26405/WP/WNE/2018/282/023
Brzozowicz Magdalena
framing effect hypothetical bias laboratory experiment

WP(27/2015)175. Exploring the role of deliberation time in non-selfish behaviour: the Double Response method

Authors: Sylwestrzak Marta Ewa, Krawczyk Michał
In this paper we introduce an innovative research method called Double Response under which subjects are incentivised to provide a quick, intuitive choice and additionally one based on longer deliberation. We apply the method to a series of simple de…

WP175. Exploring the role of deliberation time in non-selfish behaviour: the Double Response method

In this paper we introduce an innovative research method called Double Response under which subjects are incentivised to provide a quick, intuitive choice and additionally one based on longer deliberation. We apply the method to a series of simple decision tasks aimed at eliciting subjects’ social preferences (as in Charness and Rabin, 2002). Our method appears to successfully induce very quick responses. We find that although only 9.9% of initial choices are changed after deliberation, 79.4% of subjects change at least one of their choices. Comparing contents of the decisions we observe that time pressure leads to more negative attitude towards another individual’s earnings when they are higher than those of the decision maker. In other words, with deliberation decisions are typically updated towards lesser aversion to disadvantageous inequality (“envy”).


Sylwestrzak Marta Ewa, Krawczyk Michał
response time design of laboratory experiments other-regarding preference inequality aversion

WP(26/2015)174. "Thou shalt not leech" Are digital pirates conditional cooperators?

Authors: Hardy Wojciech, Krawczyk Michał, Tyrowicz Joanna
In this project we investigate willingness to share and download cultural content by implementing a novel "piracy game" modelled after standard public good games. Subjects' decisions have real consequence, as they are rewarded with indi…

WP174. "Thou shalt not leech" Are digital pirates conditional cooperators?

In this project we investigate willingness to share and download cultural content by implementing a novel "piracy game" modelled after standard public good games. Subjects' decisions have real consequence, as they are rewarded with individual "transfer" on a file-sharing service. We find that willingness to share depends positively on the sharing by others. Interestingly, however, this tendency does not seem to be associated with reciprocity or other-regarding social preferences. We employ several measures of sharing - from self-reporting to experimental - and incorporate to the analysis other factors which may explain the autonomous willingness to share, irrespective of the group effects. We find that conditional cooperation in content sharing is fairly prevalent, but unrelated to personality traits, attitude towards risk, attitude towards the other, marginal valuation, as well as socio-demographic characteristics.


Hardy Wojciech, Krawczyk Michał, Tyrowicz Joanna
digital piracy Big Five public goods laboratory experiment

WP(7/2014)124. Author gender affects the rating of academic articles: Evidence from an incentivized, deception-free laboratory experiment.

Authors: Smyk Magdalena, Krawczyk Michał
In this study we sought to verify the hypothesis that a researcher?s gender affects evaluation of his or her work, especially in fields in which women are a small minority. To this end we asked a sample of economics majors to rate papers written by m…

WP124. Author gender affects the rating of academic articles: Evidence from an incentivized, deception-free laboratory experiment.

In this study we sought to verify the hypothesis that a researcher?s gender affects evaluation of his or her work, especially in fields in which women are a small minority. To this end we asked a sample of economics majors to rate papers written by mixed-gender couples, indicating that they were (co-) authored by a ?female economist?, ?male economist?, ?young female economist? or ?young male economist?. While the age factor played no role, female authors received lower ratings. This effect was independent of the subject's gender.


Smyk Magdalena, Krawczyk Michał
women in science laboratory experiment gender bias

WP(11/2011)51. An experimental study on multi-dimensional spatial product differentiation

Authors: Kusztelak Przemysław
This study presents the results of an experiment on spatial differentiation of products in Hotelling-type models with different grades of complexity for companies' choices of space. Three models were compared, including models with a single decis…

WP51. An experimental study on multi-dimensional spatial product differentiation

This study presents the results of an experiment on spatial differentiation of products in Hotelling-type models with different grades of complexity for companies' choices of space. Three models were compared, including models with a single decision variable (single-dimensional space with automatically calculated prices), two decision variables (single-dimensional space with prices assigned by the participants) and three decision variables (bi-dimensional space with prices assigned by the participants). The research revealed that in more complex conditions, the product differentiation was smaller and that the prices were lower than in a simple environment when the Nash equilibrium was confirmed. Companies that function in complex conditions do not take advantage of the opportunity to make high profits based on product differentiation. This has a greater impact on price rigidity with respect to product variety than could be theoretically predicted. Strategies based on product differentiation are, therefore, less profitable than expected based on theoretical predictions.


Kusztelak Przemysław
spatial competition product differentiation laboratory experiments
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