Financial regulations often treat investors differently depending on whether they are classified as "sophisticated" or "non-sophisticated" consumers. Typically this classification is done based on financial consumers' financial characteristics, for example their assets or income. An alternative approach is to classify consumers by testing their financial literacy. A financial regulator wants to develop a financial literacy test and use test scores to classify consumers. Explain what the regulator can do in designing the financial literacy test that can increase their confidence that specific test scores can be reliably and accurately used to classify consumers as sufficiently sophisticated or not