Early social psychological research identified a phenomenon known as the risky shift. Later, work on ____ updated this concept of the risky shift.

A) group polarization
B) groupthink
C) optimal distinctiveness
D) the commons dilemma

The concept of the risky shift was updated by the idea of group polarization, which suggests that group discussion tends to make groups more extreme in their decisions, either more risky or more cautious, depending on the initial leanings of the group members.