Choice design with blocks of different sizes
Posted: Fri Aug 16, 2024 7:22 am
Hello,
I am reviewing a paper where authors have used a choice design with food products (unlabeled choice experiments) which have created 15 choice sets which they divided into 2 blocks of 8 and 7 choice sets. Thus, one a group of consumers get 1 block of 8 choice sets while the other group get a block of 7 choice sets. I know that the standard practice is to have blocks of equal number of choice sets, I think. I am wondering if using blocks of different sizes of choice sets is correct/potential implications or consequences, I guess related to statistical efficiency.
Best regards,
Daniele
I am reviewing a paper where authors have used a choice design with food products (unlabeled choice experiments) which have created 15 choice sets which they divided into 2 blocks of 8 and 7 choice sets. Thus, one a group of consumers get 1 block of 8 choice sets while the other group get a block of 7 choice sets. I know that the standard practice is to have blocks of equal number of choice sets, I think. I am wondering if using blocks of different sizes of choice sets is correct/potential implications or consequences, I guess related to statistical efficiency.
Best regards,
Daniele