Trainees are invited to join the new HiTOP Society where we hope to have a strong representation of early career researchers interested in quantitative psychopathology and improving the classification of mental illness. Workgroups in the HiTOP Consortium welcoming trainees to join are listed below. The grant review scheme is also open to trainees, and each year we will collate information on HiTOP researchers who are accepting graduate students in the coming year.