Part of the blame when young scientists go astray may be assigned to their mentors, says a study in the September Science and Engineering Ethics journal. The authors found that of 45 trainees who committed research misconduct, three-quarters of their mentors had never looked at their results and two-thirds of the mentors never taught them how to keep a proper lab notebook. The Chronicle of Higher Education reports that the authors suggest that PIs spot-check trainees' work and teach them about laboratory procedures and ethics.