This dissertation informed researchers about the performance of different level-specific and target-specific model fit indices in Multilevel Latent Growth Model (MLGM) using unbalanced design and different trajectories. As the use of MLGMs is a relatively new field, this study helped further the field by informing researchers interested in using…

This dissertation is comprised of three manuscripts and presents a line of research aimed at improving the measurement of bullying in schools. The first manuscript investigated the impact of an educational video on self-reports of bullying. A sample of 1,283 middle school students in randomly assigned classrooms either watched or did not watch an…