Salvatore Modica

Grading Across Schools (2009)

Dardanoni, Valentino, Modica, Salvatore, Pennsi, Aline

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...

Grading Across Schools (2009)

Dardanoni, Valentino, Modica, Salvatore, Pennsi, Aline

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...

Grading Across Schools (2009)

Dardanoni, Valentino, Modica, Salvatore, Pennsi, Aline

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...

Grading Across Schools (2009)

Dardanoni, Valentino, Modica, Salvatore, Pennsi, Aline

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...

We learned an immense amount from our fellow bloggers at (2008)

Malik Shukayev, Robert Solow, Edward Welbourne, Andrea Moro, Michael Perelman, Mike Golosov, ...

Above all we are grateful to our families, Emanuela, Niccolò, Joyce, and Milena for putting up with us while we wrote this – not to speak of reading and criticizing parts of it. A great many...

UNAWARENESS, PRIORS AND POSTERIORS (2008)

Salvatore Modica

Abstract. This note contains first thoughts on awareness of unawareness in a simple dynamic context where a decision situation is repeated over time. The main consequence of increasing awareness is...

Knowledge Transfer in R&D Outsourcing (and Linux-vs-Windows) (2003)

Salvatore Modica

Why did Microsoft not hire all those smart programmers who ended up developing Linux through the internet? Because, we answer, the value of the information about its operating system that Microsoft...

Unawareness and Partitional Information Structures (1999)

Salvatore Modica, Aldo Rustichini

We claim first that simple uncertainty is not an adequate model of a subject's ignorance, because a major component of it is the inability to give a complete description of the states of the...

Belief Dependent Utility (1996)

Salvatore Modica, Aldo Rustichini

. We study preferences over Savage acts where the decision maker may assign extremely low probability to some states and some of the consequences may be extreme. In particular we are interested in...

Credit Market Failures and Policy

Enrico Minelli, Salvatore Modica

In a simplified version of the Stiglitz–Weiss (1981) model of the credit market we characterize optimal policies to correct market failures. Widely applied policies, notably interest–rate...

The convexity-cone approach to comparative risk and downside risk.

Salvatore Modica, Marco Scarsini

Based on Jewitt (1986) we try to find a characterization of comparative downside risk aversion and love. The desired characterizations involve the decomposition of the dual of the intersection of two...

Unawareness and bankruptcy: A general equilibrium model

Salvatore Modica, Aldo Rustichini

We present a consistent pure-exchange general equilibrium model where agents may not be able to foresee all possible future contingencies. In this context, even with nominal assets and complete asset...

Unawareness, priors and posteriors

Salvatore Modica

Awareness of Unawareness, Model Uncertainty, D83, C11, 91B06, 91B44, 62C10,

A Neo[superscript]2 Bayesian Foundation of the Maxmin Value for Two-Person Zero-Sum Games.

Hart, Sergiu, Modica, Salvatore, Schmeidler, David

A joint derivation of utility and value for two-person zero-sum games is obtained using a decision theoretic approach. Acts map states to consequences. The latter are lotteries over prizes, and the...

Credit market failures and policy

MINELLI, Enrico, MODICA, Salvatore

In a simple model of the credit market, based on Stiglitz-Weiss (1981), equilibria are computed and optimal policies to correct market failures are characterized. Some widely applied policies,...

Asset trading with informed price makers

MODICA, Salvatore

The present paper analyses existence and structure of revealing equilibria of a game which models the asset-trading interaction between a risk-neutral informed price-making agent and an uninformed...

Credit Market Failures and Policy

ENRICO MINELLI, SALVATORE MODICA

In a simplified version of the Stiglitz and Weiss (1981) model of the credit market we characterize optimal policies to correct market failures. Widely applied policies, notably interest-rate...

Grading Across Schools

Valentino Dardanoni, Salvatore Modica, Aline Pennsi

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...

The Simpson paradox of school grading in Italy

Dardanoni, Valentino, Modica, Salvatore, Pennisi, Aline

Data from the 2003 OECD-PISA Survey for Italy reveal a striking difference in the relationship between students' competence (as measured by PISA score in Mathematics) and school grades across...

Regression with Imputed Covariates:a Generalized Missing Indicator Approach

Valentino Dardanoni, Salvatore Modica, Franco Peracchi

A common problem in applied regression analysis is that covariate values may be missing for some observations but imputed values may be available. This situation generates a trade-off between bias...

Grading Across Schools

Valentino Dardanoni, Salvatore Modica, Aline Pennsi

This paper reports some facts about grading standards across a varied sample of 16 countries participating in the 2003 OCSE-PISA Survey. Our main finding is that in all countries except Ireland and...