The problem with jerks is they don t always reveal themselves until you re already working with them too closely to cut ties.

To avoid getting into a sticky situation, watch how the people you meet treat strangers.

As business site Inc. points out, jerks are often nice to the people they need something from, but they ll start showing their true colors to strangers.

Pushing through to the front of a line, getting short with a waiter, or being aggressive in traffic.

How that person interacts with strangers can tell you a lot about how they ll act when you start to get in their way:

Watch reactions to strangers: Go to lunch and pay deep attention to how the wait-server is treated, or in a cafeteria, how the candidate maneuvers through a line at check out.

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