I was trying to estimate an actor-partner interdependence model (APIM; Kenny et al., 2006) in SEM and have used a pairwise data entry format. Using this approach, the sample size has become double. For instance, if I have 100 couples, the sample size would become 200. Because the unit of analysis should be at the couple level, I would like to adjust the estimates (and standard errors) based on N = 100, instead of 200. Is there a way I can specify that in Mplus?