Johnson and Scott investigated the effect of weapon anxiety on recall. Participants believed they were taking part in a lab study and had to wait in a waiting room, whilst in the waiting room, an argument could be heard in the next room. In the low anxiety scenario, a man ran past carrying a grease covered pen. In the high anxiety scenario, a man ran past carrying a knife covered in blood. 49% of participants were able to correctly identify the man in the low anxiety scenario, 33% of participants were able to correctly identify the man in the high anxiety scenario.