As reported in New Scientist magazine, she and her colleagues checked the accident records of 140,000 American families, comparing parents and their children aged 18 to 21.
Ajakiri „New Scientist ” ütleb, et Susan Ferguson ja tema kolleegid uurisid 140 000 Ameerika perekonna avariiprotokolle, võrreldes vanemate ja nende laste (vanuses 18 – 21) liiklusavariisid.