Hi, I conducted a longitudinal study (2 waves, 1st wave was in March 2019, and 2nd 6 months later) and wanted to ask how to analyze the data in SPSS using dependant variable in Time 2, controlled variable in Time 1, and predictor? I want to analyze the relationships between 4 variables and 2 other variables, in both waves of the study. Later I would like to create a cross-lagged panel analysis (I use SPSS). I have tried hierarchical regression and mixed models but it seems incorrect (In first I don't see where to write down the controlled variable, and mixed models are more similar to t-student analyzis than to regression). What is the exact name of the regression analysis I should use? I would be more than grateful for support as I feel completely lost in the regression topic and couldn't find any practical explanation how to run the analysis.