why test correlation and groups differences using the same variable? is there an arbitrary discretisation of a latent trait what is the relationship between response times and trait x what is the correlation between response times and trait x_ why test for both correlation and group differences using the same variable? how many questions in a research paper to find an association between response times and trait? what is the cortical relationship between trait x_ why test for both correlation and group differences which of the following is a problem with the first question of this research why test for both correlation and group differences how to test for latent trait which is a problem if the _________ is used in the __________ variable what is the correlation between response times and trait x_? which of the following can be used to test for a latent trait? if there are correlation and group differences in a trait what is the difference why do researchers always test for correlation and differences with the same variable which research question is the correlation between response times and trait x_ what are two research questions what are the correlations between response times and trait x_ a measure of why do we ask the latent trait question