data was collected in 23 different cities around the world
in most cities, one local individual- most often a student home for summer vacation- collected all the data . all experimenters were male, college age, and dressed neatly and casually
the helping scenarios: drop a pen whilst walking along, drop a pile of magazines whilst walking with a heavy limp and wearing a large leg brace and act like a blind person needing help to cross the road
the confederates recorded the three scenarios in city centre areas on clear days during main business hours