Empiriceme · Evidence · Bias / Effect

Recency Bias

Recent events are weighted more heavily than earlier events.

The everyday form is judging a whole year by December, or a manager by the last quarter. In finance it produces the standard error of extrapolating recent returns, which is why disclaimers about past performance exist.

In practice

  • A fund's three-year record is read as skill and the ten-year record as history.
  • A manager who had a strong final month is rated well above one who was consistent and finished quietly.
Further reading
Wikipedia
Subject
Psychology & Behavior
Essay
A century and a half of measuring the mind

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