I'm doing a survey with 2 blocks of 17 (16 random choice tasks and 1 fixed choice task to test response quality) CBC choice tasks. I would like respondents to be randomly assigned to either block 1 (Q1 - Q17) or block 2(Q18-Q34) (Not both). Additionally, I would like respondents to be assigned 50/50.
I found an answer on a related topic on this forum (March 2015), on which I based my actions. This is what I did:
In the Write questionnaire menu, I clicked the randomize button and creatded two blocks using the anchor questions:
Then I added a new parent list called Blocklist, in which I defined coded 1+2 as follows:
Then I created a constructed list called BlockconList :
Then I selected the "BlockedconList" from the "Use constructed list" dropdown menu within the randomize option.
To provide quotas, I added a quota question called QTConcept after Q34 (on the same page):
Cell name = Concept1
Cell limit = 1
Qualification Logic= ListValue(BlockConList,1)=1
Cell Limit= 2
I intentionnaly lowered the cell limits to test if the quota's worked. Unfortunately, concept 2 (so block 2) was shown more than 2 times while concept1 (block 1) was not shown to respondents.
Anyone that knows how to solve this problem?
Many thanks in advance!