Use of a cell phone reduces attention and increases response times. 62 people (30 men, 32 women) were confronted with a confederate wearing a large leg brace, who dropped a stack of magazines and feigned difficulty retrieving them. Among the 33 people who talked on their cell phones only 9% offered their help, whereas among the 29 people who did not talk on their cell phones, 72% offered help. The use of cell phones affects helping behavior.