Zhang W, et al. - Distinct longitudinal trajectories of the frequency of psychotic-like experiences (PLEs), as well as their relationship to ensuing mental disorder development were determined. In this longitudinal study of self-reported PLEs and concurrent traumatic experiences, annual classroom assessments using the Community Assessment of Psychic Experiences and the Trauma History Questionnaire were performed among 6,198 adolescents over 3 years (2014–2016). The analysis revealed stable low levels of PLE frequency and progressively increasing PLE frequency as two different PLE trajectories. In predicting emergent mental disorder, especially psychosis, the pattern of increasing PLEs outweighs the other; minority status, trauma, and family divorce are also predictive factors for any psychiatric disorder. This suggests possible targets for preventive intervention.