Findings from the IFoA Getting Better Judgment Working Party and an Internal Prediction Survey
This webinar will feature the results from two surveys:
The IFoA Getting Better Judgment Working Party 2014 Survey
Actuarial modelling relies on two key sources of input: data and expert judgment. While methods of channelling data to meaningful outputs have historically received high level of attention from the scientific community, research into how good quality expert judgment can be obtained is less mature in actuarial research. The aim of IFoA’s Getting Better Judgment Working Party is to make useful progress in this area, providing practitioners with ways to obtain expert judgment better.
Underwriters are from Mars, Actuaries are from Findings from an Internal Prediction Survey
Human interaction with actuarial models is inevitable and requires careful study so that these models could better serve their purposes. Empirical and scientific investigations into how experts make their judgments are rarely reported in actuarial science literature. We discuss findings from a prediction survey, whose 120 respondents in a global non-life (re)insurance company were nearly evenly split between underwriters and analysts. The hypothesis that underwriters and analysts tended to give different quantitative judgments under similar levels of information and incentivisation was tested. Of the four one-step prediction problems, none gave evidence to support this hypothesis. Examination of comments revealed broad pairs of paradigms from which individuals often selected when interpreting data for prediction. Outliers situated at the most recent positions were influential. The Availability Heuristic is used to describe the strong observed differences according to geographical location. Experts are encouraged to contemplate alternatives in interpreting data for a fuller understanding of it. We highlight example research questions that could be usefully undertaken by researchers.
The talk was first given at the CAE Spring Meeting (May 2014) and then at the IFoA’s General Insurance Pricing Seminar (June 2014).
August 6, 2020