Hi, I built a survey where I ask participants to evaluate four short texts. The survey has been responded and I extracted all the answers.

In the survey, I have four blocks of questions. In each block, respondents are required to evaluate one text. The questions in the four blocks are the same but the text that requires evaluation changes. For each block, there’re three text options that are ramdomised to present only one of the 3 texts to the respondent.

In analysing the data, I’d like to combine the responses to the matrix questions for all the texts (from the four blocks). As I said above, all the questions are the same, only the texts evaluated change. Is there a way to combine the responses of the matrix questions for all blocks for analysis? I'd like to do this because I intend to make correlations between demographic data and the way texts were evaluated in general. Many thanks!