Vorderseite A researcher, conducting a prospective longitudinal study on aggression from childhood to adolescence, found various trajectories differing in precursors and outcomes. The researcher decided to subject part of the sample to an intervention (randomized control trial). What could have been the main aim? A) To investigate whiter induced change of precursors result in shifting individuals to other trajectories. B) To translate research results as quickly as possible to practical application, and thereby also increase public support. C). To corroborate the longitudinal data by independent experimental evidence.