Dorien Bangma

26 | CHAPTER 2 examiner based on the ability of the participant to communicate about the problem and the available options on a scale from 0 to 2. For each domain, specific requirements are described for achieving a particular score. The domain of Understanding consists of three questions; therefore, an average score is calculated based on the answers on these three questions and rounded downwards. The procedure is identical for both vignettes. The scores on each domain of both vignettes are added which results in a total score for each domain (maximum score of 4 for each domain). An overall total score is calculated as the sum based on all domains (maximum score of 20). The administration time of the FDMI is approximately 10-15 minutes for each vignette, which results in a total administration time of 20-30 minutes. CDR: Competence in Decision Rules test The Competence in Decision Rules (CDR) test is used to evaluate the ability to use specific rules or criteria to form a decision, e.g., when selecting a product that needs to meet certain specifications. The CDR is a Dutch variant of the Applying Decision Rules subtest of the Adult Decision-Making Competence battery (Bruine de Bruin et al., 2007; Parker & Fischhoff, 2005). The CDR is a literal translation of the original version, but slightly adjusted in order to make the test more suitable for the Dutch population (i.e., typical Dutch names for main characters in each question) and current time (i.e., the original version refers to DVD players instead of televisions). In the CDR, participants need to choose between five televisions using specific decision rules. The televisions are equally priced, but differ in their technical specifications (i.e., picture quality, sound quality, programming options and reliability of the brand). Each specification is scored on a five-point Likert scale, namely (1) a ‘ very low’ rating, (2) a ‘ low’ rating, (3) an ‘ average’ rating, (4) a ‘ high’ rating and (5) a ‘ very high’ rating. To make correct decisions in this test, participants are required to analyze the specifications of each television and to balance all pros and cons of a specific television based on the given preferences of the character in a scenario. In total, the CDR consists of ten hypothetical scenarios with increasing complexity. An example of a scenario of the CDR is ‘Emma wants the television with the highest average rating. However, she also wants to make sure that she buys a television that obtained the best rating on sound quality’ . In most scenarios, one television meets the preferences of the character and is the correct answer (six scenarios). However, it is also possible that none of the televisions meet the preferences of the character (one scenario) or that multiple televisions meet the preferences of the character (three scenarios). Participants are informed about the different answer options by presenting three practice scenarios prior to the actual test. A completely correct answer on each scenario is rewarded with one point (maximum total score of 10 points). Only on the last scenario, 0.5 points can be obtained if two out of three correct televisions are identified. For this test a booklet that includes the different scenarios and a scoring sheet are required. Both are provided to the participant and answers are written down by the participant. Participants need to write down an answer on the scoring sheet before continuing to the next question. The CDR has no time limit. The administration time of the CDR is approximately 10- 15 minutes.