Reading focus
Syllabus: How Do Other People and Social Situations Shape Us?
Distinguish the manipulated number of apparent witnesses from the inferred diffusion of responsibility.
Why you’re reading it. Use a familiar experiment to ask how the presence of other people changes the conditions for helping.
A question to consider. Would assigning one group member responsibility for welcoming a newcomer follow directly from this emergency experiment, or require a new test?
Why this reading
Darley and Latané turn a question about helping into an experimental comparison: does believing that other people can also hear an emergency change whether, and how quickly, someone seeks help? The study separates an observed response from a proposed explanation in terms of shared responsibility. Its design makes both the value and the limits of a situational explanation visible.
Before you read
The study was prompted by the 1964 killing of Kitty Genovese in New York, reported at the time as having been witnessed by thirty-eight people who did nothing. Know that the reporting was later shown to be substantially inaccurate; the experiment's value does not depend on the anecdote.
Have in mind the two explanations the authors set against each other: that bystanders are apathetic, a claim about persons, and that responsibility is diffused among those present, a claim about situations.
Read for
- How the number of bystanders is manipulated without any bystander actually being present, and why that matters for the inference.
- The dependent measures. Notice that speed of response carries as much of the argument as whether people responded at all.
- The authors' attempt to relate personality measures to helping, and what they conclude from the failure to find relations.
- The mechanism proposed. Is diffusion of responsibility observed, or inferred from the pattern?
Consider afterwards
- The participants could see neither one another nor the victim. Which features of a real emergency does this remove, and how might those features affect helping?
- What would you need to compare the contribution of personality and situation beyond the particular manipulation and measures in this experiment?
Editorial context
The Fischer et al. meta-analysis examines how the bystander effect varies with emergency conditions, including danger. Philpot et al.'s CCTV study asks a different question: whether at least one person intervenes in a public conflict. Frequent help at the event level does not by itself contradict a reduction in an individual's probability of helping. Distinguish the outcome and unit of analysis before treating a later study as a replication or reversal.