Oldfield 1982.

Methods	Randomisation by drawing names from a box.
Participants	22 grade 4‐6 students with >=10 incidents of violent or aggressive behaviour during a 25 day observation period. 3 students had learning difficulties.
Interventions	I: Meditation training (90 minutes of training over 2 sessions, practiced daily for 10‐20 minutes for 80 days). P: Behaviour charting training (90 minutes training then 15 minutes daily use for 80 days)
Outcomes	(1) *Violent/Aggressive Incident Form, teacher (blinded) (2) Rosenweig picture Frustration Study
Notes	Data collected during last 25 days of intervention.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear