21,443 research outputs found

    Inefficiencies in Digital Advertising Markets

    Get PDF
    Digital advertising markets are growing and attracting increased scrutiny. This article explores four market inefficiencies that remain poorly understood: ad effect measurement, frictions between and within advertising channel members, ad blocking, and ad fraud. Although these topics are not unique to digital advertising, each manifests in unique ways in markets for digital ads. The authors identify relevant findings in the academic literature, recent developments in practice, and promising topics for future research

    The Impact of Insurance Fraud Detection Systems

    Get PDF
    The purpose of this paper is to characterize the impact of fraud detection systems on the auditing procedure and the equilibrium insurance contract, when a policyholder can report a loss that never occurred. Insurers can only detect fraudulent claims through a costly audit (costly state verification). With a fraud detection system insurers can depend their audit on the signal of the system and auditing becomes more effective. This paper presents conditions under which insurance fraud and the resulting welfare losses can be reduced by the implementation of a costly fraud detection system that is supplied by an external third party.insurance fraud, auditing, detection systems, costly state verification

    The Impact of Insurance Fraud Detection Systems

    Get PDF
    The purpose of this paper is to characterize the impact of fraud detection systems on the auditing procedure and the equilibrium insurance contract, when a policyholder can report a loss that never occurred. Insurers can only detect fraudulent claims through a costly audit (costly state verification). With a fraud detection system insurers can condition their audits on the signal of the system and auditing becomes more effective. This paper presents conditions under which insurance fraud and the resulting welfare losses can be reduced by the implementation of a costly fraud detection system in a competitive insurance market that is supplied by an external third party.insurance fraud, auditing, detection systems

    Optimal auditing with scoring: theory and application to insurance fraud

    Get PDF
    This article makes a bridge between the theory of optimal auditing and the scoring methodology in an asymmetric information setting. Our application is meant for insurance claims fraud, but it can be applied to many other activities that use the scoring approach. Fraud signals are classified based on the degree to which they reveal an increasing probability of fraud. We show that the optimal auditing strategy takes the form of a “Red Flags Strategy” which consists in referring claims to a Special Investigative Unit (SIU) when certain fraud indicators are observed. The auditing policy acts as a deterrence device and we explain why it requires the commitment of the insurer and how it should affect the incentives of SIU staffs. The characterization of the optimal auditing strategy is robust to some degree of signal manipulation by defrauders as well as to the imperfect information of defrauders about the audit frequency. The model is calibrated with data from a large European insurance company. We show that it is possible to improve our results by separating different groups of insureds with different moral costs of fraud. Finally, our results indicate how the deterrence effect of the audit scheme can be taken into account and how it affects the optimal auditing strategy.Audit, scoring, insurance fraud, red flags strategy, fraud indicators, suspicion index, moral cost of fraud, deterrence effect, signal manipulation.

    Deterrence and Morale in Taxation: An Empirical Analysis

    Get PDF
    The standard model of tax evasion based on the subjective expected utility maximization does not perform particularly well in econometric analyses: it predicts too little evasion and produces unsatisfactory econometric parameter estimates. The model is extended by looking at how the tax authority deals with the taxpayers. Based on econometric estimates, it is shown that taxpayers’ tax morale is raised when the tax officials treat them with respect. In contrast, when tax officials solely rely on deterrence taxpayers tend to respond by actively trying to avoid taxation.
    • …
    corecore