Zuzana Irsova

Charles University in Prague

34Publications

11H-index

726Citations

Publications 34

Newest

Death to the Cobb-Douglas Production Function? A Quantitative Survey of the Capital-Labor Substitution Elasticity

#2Tomas HavranekH-Index: 21

Last.Dominika Kolcunova

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We show that the large elasticity of substitution between capital and labor estimated in the literature on average, 0.9, can be explained by three factors: publication bias, use of aggregated data, and omission of the first-order condition for capital. The mean elasticity conditional on the absence of publication bias, disaggregated data, and inclusion of information from the first-order condition for capital is 0.3. To obtain this result, we collect 3,186 estimates of the elasticity reported in...

#2Tomas HavranekH-Index: 21

Last.Jiri SchwarzH-Index: 6

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A key parameter in international economics is the elasticity of substitution between domestic and foreign goods, also called the Armington elasticity. Yet estimates vary widely. We collect 3,524 reported estimates of the elasticity, construct 34 variables that reflect the context in which researchers obtain their estimates, and examine what drives the heterogeneity in the results. To account for inherent model uncertainty, we employ Bayesian and frequentist model averaging. We present the first ...

#2Tomas HavranekH-Index: 21

Last.Jiri SchwarzH-Index: 6

view all 4 authors...

A key parameter in international economics is the elasticity of substitution between domestic and foreign goods, also called the Armington elasticity. Yet estimates vary widely. We collect 3,524 reported estimates of the elasticity, construct 34 variables that reflect the context in which researchers obtain their estimates, and examine what drives the heterogeneity in the results. To account for inherent model uncertainty, we employ Bayesian and frequentist model averaging. We present the first ...

#2Tomas HavranekH-Index: 21

Last.Zuzana IrsovaH-Index: 11

view all 3 authors...

We examine 434 estimates of the individual discount rate reported in 27 published studies. The estimates vary substantially across studies with reported mean at the value of 0.4. We detect presence of selective reporting in the discounting literature using a meta-analytical methods. Our results suggest that relevant discounting literature overestimates the discount rate approximately twofold. We apply Bayesian model averaging to explain heterogeneity in the estimates. Discount rate estimates are...

#1Tomas Havranek (Charles University in Prague)H-Index: 21

#2Zuzana Irsova (Charles University in Prague)H-Index: 11

Last.Olesia Zeynalova (Charles University in Prague)H-Index: 1

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One of the most frequently examined relationships in education economics is the correlation between tuition fee increases and the demand for higher education. We provide a quantitative synthesis of 443 estimates of this effect reported in 43 studies. While large negative estimates dominate the literature, we show that researchers report positive and insignificant estimates less often than they should. After correcting for this publication bias, we find that the literature is consistent with the ...

Measuring the Income Elasticity of Water Demand: The Importance of Publication and Endogeneity Biases

#1Tomas Havranek (Charles University in Prague)H-Index: 21

#2Zuzana Irsova (Charles University in Prague)H-Index: 11

Last.Tomas Vlach (Charles University in Prague)H-Index: 1

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We present the first meta-analysis of the income elasticity of water demand that accounts for the effects of publication selection (the preferential reporting of estimates that are in- tuitive and statistically significant). Paradoxically, more affected by publication selection are the otherwise preferable estimates that control for endogeneity. Because such estimates tend to be smaller and less precise, they are often statistically insignificant, which leads to more intense specification search...

#1Tomas HavranekH-Index: 21

#2Dominik HermanH-Index: 1

Last.Zuzana IrsovaH-Index: 11

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The original rationale for adopting daylight saving time (DST) was energy savings. Modern research studies, however, question the magnitude and even direction of the effect of DST on electricity consumption. Representing the first meta-analysis in this literature, we collect 162 estimates from 44 studies and find that the mean reported estimate indicates slight electricity savings: 0.34% during the days when DST applies. The literature is not affected by publication bias, but the results vary sy...

#1Tomas Havranek (Charles University in Prague)H-Index: 21

#2Zuzana Irsova (Charles University in Prague)H-Index: 11

National borders reduce trade, but most estimates of the border effect seem puzzlingly large. We show that major methodological innovations of the last decade combine to shrink the border effect to a one-third reduction in international trade flows worldwide. For the computation we collect 1,271 estimates of the border effect reported in 61 studies, codify 32 aspects of study design that may influence the estimates, and use Bayesian model averaging to take into account model uncertainty in meta-...

#1Tomas HavranekH-Index: 21

#2Zuzana IrsovaH-Index: 11

Last.Olesia ZeynalovaH-Index: 1

view all 3 authors...

One of the most frequently examined relationships in education economics is the impact of tuition increases on the demand for higher education. We provide a quantitative synthesis of 443 estimates of this effect reported in 43 studies. While large negative estimates dominate the literature, we show that researchers report positive and insignificant estimates less often than they should. After correcting for this publication bias, we find that the literature is consistent with the mean tuition-en...

#1Tomas HavranekH-Index: 21

#2Zuzana IrsovaH-Index: 11

Last.Olesia ZeynalovaH-Index: 1

view all 3 authors...

One of the most frequently examined relationships in education economics is the impact of tuition increases on the demand for higher education. We provide a quantitative synthesis of 443 estimates of this effect reported in 43 studies. While large negative estimates dominate the literature, we show that researchers report positive and insignificant estimates less often than they should. After correcting for this publication bias, we find that the literature is consistent with the mean tuition-en...

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