representativeness bias

Why placing an emphasis on short term performance results is a consequence of representativeness bias?

Incorrectly assuming that the short term performance results are representative for the whole period.

This is what I figured out, but I got trapped in this question, too.

representativeness is about small sample sizes, stereotypes and “recency” aka recent events.

I had a client call me in November asking if he should park all his investments in cash… I asked why, he said the market just lost 1%… I told him he has a reprsentativeness bias (actually no I didn’t)… wow, isn’t he glad he didnt sell looking at today’s market? (hindsight bias on my part)