How the identifiable victim effect works

Participants were asked to help: some were told the story of one child, with a name and photo; others heard about millions of people in need; a third group was shown both. Researchers compared how much people were willing to give.

The most unexpected result came from the third group. Adding statistics to the story of one child did not strengthen the response - it weakened it. Numbers seemed to switch off the compassion people already felt for a specific person.

One explanation is that compassion works through mental images. You can picture one person: their face, room, and day. You cannot picture a million people, so an abstraction takes the place of an image - and the emotional system does not respond to it.

The first implication is practical: every appeal for help is built around one story. This is not manipulation for its own sake, but the only way to break through our numbness to numbers.

The second is more uncomfortable. Our willingness to help is poorly connected to the scale of the disaster. An event affecting millions can prompt less response than one person's fate, making aid distribution unfair.

That leads to a recommendation from researchers in this area: when limited aid needs to be allocated, rely on calculation rather than the strength of the response. Your feelings may tell you whom you want to help, but not where help is most needed.

There is also an important other side. The ability to respond to one person is not a flaw - it is what makes help possible in the first place. The problem is not the ability itself, but trying to use it when the numbers run into the thousands.

There is also a reverse approach that is sometimes tried: showing one person as a representative of many. It works unevenly, because mentioning the scale brings back that same numbness to numbers.

Researchers also point to the feeling of powerlessness. When a disaster looks too large, you may start thinking that your contribution will not change anything, which also reduces your willingness to help.