The statement is true: bystander behavior can be defined as seeing a problem and then taking appropriate action. In many contexts, “bystander behavior” refers to how a person responds after noticing an issue, including deciding to intervene, seek help, or report the problem. However, in psychology, there is nuance: bystander behavior is often discussed in relation to the bystander effect, where the presence of others can reduce the likelihood of intervening, sometimes leading to inaction rather than action. So the concise characterization in the query captures one aspect of bystander behavior (recognizing a problem and acting), but real-world bystander behavior also includes barriers and variations that influence whether action occurs.
