procedure

• participants were told that they were taking part in a 'visual perception task'
• they were tested with 7-9 participants
• participants were shown 2 white cards- the first card showed the standard line and the second card showed 3 comparison line, with 1 being the same length as the standard line
• there were 18 trials with 6 being real and 12 being fake
• the group was asked what line was the same as or similar to the standard line
• there were confederates and 1 real participant