Participants were asked to first write sentence, count numbers, then mix writing and counting. Everyone does all three tasks but now half of them have to do it using their non-dominant hand (e.g., right hand if one is left-handed). The DV is still the number of items completed in 30 seconds. Is there an interaction?

Task X Dominant hand

100 75 Dominant hand Dependent 50 yes no HI 25 write count mix task