Assessing influence numerical issues

The following questions can be helpful in a preliminary assessment, which is needed to identify the most relevant extrapolation issues. The target of this step is to identify the key items that are likely influencing the outcomes of the risk assessment most, and to discard the numerically less important items, especially in the lower tiers. The important question is whether the extrapolation issues can be ranked according to (numerical) importance. It motivates the need for extrapolation, and the most relevant extrapolation issues (Step 1 and Step 2, as introduced above). 

Answers to these questions provide preliminary insight into the variables for which extrapolation can be considered most urgent, due to an estimated numerical influence on the assessment results. For example, matrix and media extrapolation might be identified as the most important modifying factor, and the risk assessment might fully focus on this factor in the lowest tier. Information on issues for which no extrapolation will be applied need to be kept in the dossier, for reporting which factors have been considered and what numerical influence (magnitude and direction) is expected. 

There are a number of issues which can have a negative impact on the accuracy of cognitive ability testing. Any issue which has a negative impact on the accuracy of the assessment will also have a negative impact on the accuracy of the decisions made based on the assessment information. While there are numerous textbooks devoted to psychological testing, the main issues which can influence assessment accuracy are relate to appropriate test selection, test validity and reliability, test administration, and test score interpretation. It is beyond the scope of this book to go into these issues in detail. However, the key point is that employees in an... 

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