ABA glossary
Measurement bias
Definition
A systematic error that pushes recorded values in the same direction, consistently above or below what really happened. Unlike random error, it does not cancel out over many observations.
Example from a session
Partial-interval recording keeps showing more aggression than a full video count, session after session.
Can you spot measurement bias in a scenario?
Practice RBT A.2 with exam-style questions and instant feedback.