Main Effects & Interactions page 2. Because a main effect is the effect of one independent variable on the dependent variable, ignoring the effects of other independent variables, you will have a total of two potential main. effects in this study: one for age of student and one for teacher expectations. In general, there. is one main effect for every independent variable in a study.
When to Make Reservations. Guests staying at a Disney Resort can book Fastpasses up to 60 days in advance. At that point they are able to make reservations for the length of their stay. Guests not staying at a Disney Resort can book Fastpasses up to 30 days in advance.
If you pay for seating you can check in and print boarding passes up to 30 days before your flight. If you accept allocated seats you can only do this from seven days before, so you would probably have to do your return trip in resort.