Reading focus
Syllabus: Why Do People Harm Others—and What Can Reduce It?
Compare the authors' criteria for aggression with the assumptions built into noise, hot-sauce, and symbolic tasks.
Why you’re reading it. Establish a standard for judging the measures used throughout this path.
A question to consider. A task records that someone assigns difficult puzzles to a stranger. What would you need to know before calling that behavior aggressive?
Why this reading
Before explaining aggression, researchers must decide what counts as evidence of it. This review asks whether common laboratory tasks meet their own definition of aggression and what those tasks can tell us about harm outside the laboratory.
Before you read
The authors define aggression through intended harm to a person believed to want to avoid it. Anger is an emotion; aggression is behavior. Construct validity concerns whether a measure represents the proposed concept. A task can meet a definition without representing every form or severity of aggression.
Read for
- Compare the intent, expected harm, and recipient's preferences assumed by each task.
- Look for competing motives, such as winning a game or complying with instructions.
- Distinguish criticism of a measure from rejection of laboratory research itself.
Consider afterwards
- What evidence would make choosing a loud noise interpretable as aggression rather than competition?
- Which kinds of harm would remain outside that measure's reach?
Editorial context
This is a conceptual assessment, not a meta-analysis establishing that all tasks fail. Chester and Lasko's later standardized-task study reports preliminary internal-validity support alongside mixed external and discriminant validity. Validation requires several kinds of evidence, not a task's name alone.