Default and knowledge 3

This research intends to investigate if the default effect (i.e. the difference in choices people make when confronted with an opt-in vs an opt-out choice format) depends on their knowledge of the choice domain (low vs high). Two different groups of students (psychology or economy) are presented twice with lists of eight statements (facts about the psychology and economy domain) which they have to judge as being true or false. The choice format is manipulated between-subjects, by preselecting all the statements (all the boxes in front of the statements are already checked and need to be actively unchecked if not chosen; opt-out) or not preselecting them (the boxes are unchecked an need to be actively checked if chosen; opt-in). It is expected that choice format influences the number of selected statements as being true (more in the opt-out than in the op-in), but mostly when the are statements are from the knowledge domain different from the students' study program.