Although psychologists know a great deal about leadership, persons who
make decisions about real leaders seem largely to ignore their accumu
lated wisdom. In an effort to make past research more accessible, inte
rpretable, and relevant to decision makers, this article defines leade
rship and then answers nine questions that routinely come up when prac
tical decisions are made about leadership (e.g., whom to appoint, how
to evaluate them, when to terminate them).