The Identifiable Victim Effect
Eight charitable appeals. Four describe a statistical population. Four describe one named person whose face you can almost see. Hidden in pairs across the eight. You rate willingness to help on a 0-100 slider. WIZ measures how much the name added to the number.
“If I look at the mass I will never act. If I look at the one, I will.”attributed to Mother Teresa
Thomas Schelling (1968) “The Life You Save May Be Your Own” named the asymmetry: “Let a six-year-old girl with brown hair need thousands of dollars for an operation that will prolong her life until Christmas, and the post office will be swamped with nickels and dimes to save her. But let it be reported that without a sales tax the hospital facilities of Massachusetts will deteriorate and cause a barely perceptible increase in preventable deaths, and not many will drop a tear or reach for their checkbooks.”
Small Loewenstein & Slovic (2007) ran the controlled experiment. Subjects given a Save the Children appeal mentioning “Rokia, a 7-year-old girl from Mali” donated mean $2.83. Subjects given a statistical appeal about food shortages affecting more than 3 million children in Malawi donated mean $1.17. Same charity, same problem, same dollar endowment. Adding one face roughly doubled the giving rate. Lee & Feeley (2016) Social Influence vol 11 pooled 41 studies and confirmed the pattern across cause domains, populations, and decades. Slovic (2007) ran the inverse: showing the named child alongside the statistics REDUCES donations relative to the named child alone. The mass deflates the face when both are shown.
Mechanism per Dickert Sagara & Slovic (2011): identifiability triggers an immediate affective response which then determines willingness to help. Statistical victims fail to trigger the first stage at all — what Slovic calls “psychic numbing” — and the deliberative second stage rarely compensates. Aylan Kurdi, the 3-year-old Syrian boy whose body washed up on a Turkish beach in September 2015, caused a 100-fold spike in donations to the Swedish Red Cross campaign for Syrian refugees in the week his photograph circulated. The civil war at that point had killed an estimated 250,000 people, including many thousands of children, none of whom had moved the donation curve. One face did what 250,000 statistics could not.
The exercise. Eight appeals in four hidden pairs. Each pair covers the same cause: food insecurity, disaster relief, animal welfare, pediatric medical. One member of each pair describes a population; the other describes one named individual. For each appeal you move a 0-100 slider for how compelled you feel to help. At the end I compute your Identifiable Victim Gap: the average willingness on the four identifiable appeals minus the average willingness on the four statistical appeals. The Small Loewenstein & Slovic (2007) modal subject sits at 25 to 40 points across cause domains. A subject with no identifiability sensitivity sits at zero. A subject who hears nothing but the name sits above 60.
The exercise is not a moral test. The bias is real and operates on almost everyone. Knowing it is the first step in the Slovic 2007 intervention: when you feel the pull toward the face, do not suppress it — just check whether you would feel the same pull toward the same person if you knew the mass.