A. Allan Martin

A foremost authority on youth ministries reflects upon 50 years of research to understand the spiritual experience of teenagers.

I first learned the term, the bystander effect, in my undergraduate social psychology class. Wikipedia defines it as "a psychological phenomenon in which someone is less likely to intervene in an emergency situation when other people are present and able to help than when he or she is alone." The article references a variety of horrific incidences in which dozens of bystanders "stood by" and did nothing as homicides occurred before their eyes.