For purposes of illustration, we created the three manifest variables that served as indicators for the latent factor ‘perpetration of psychological violence during emerging adulthood’ in the following way. We began with 15 items assessing target psychological violence toward the romantic partner during emerging adulthood (12 items from the romantic partner, and three observer ratings). We randomly selected four romantic partner items and one observer rating. We first averaged the four romantic partner items so that the parcel would contain equal proportions of variance from both reporters, then we averaged the romantic partner items with the observer rating to create our first parcel. From the remaining 10 items, we randomly selected four items from romantic partner, and one observer rating, which we averaged in like manner to create the second parcel. The remaining five items were similarly averaged into a third parcel. Each of these parcels, as well as all other parcels, had an aggregate reliability of .65 or higher.