what is mixed model data acoustic mixed models is ancova a repeatable variable which spss model is used to compare groups of children and their brain activity? can you use a mixed mixed model to compare tasks? why is mixed data set used? does the repeated measures racovka model work in the mixed model what is mixed model what is a mixed model of task can you use anabova to test for age what is ancova mixed model is age the same as age in ancova? what is the mixed model used for in SPSS spss mixed model which model is mixed ics mixed model why is mixed model used why is spss mixed model in ancova when to do mixed model for brain activity age of group activity spss