The problem of a researcher seeing only what they expect to see is called

AResearcher bias ✓ Correct

BExperimenter effect

CLeniency effect

DHalo effect

Correct answer: (A) Researcher bias

Explanation

Seeing only what one expects to see is called researcher bias.

The experimenter effect is the researcher unintentionally influencing participants' behaviour.

The leniency effect is a rater's tendency to grade too generously.

The halo effect is letting one trait colour the judgment of unrelated traits.

Researcher bias distorts observation, recording, and interpretation of data.

Blinding and clear protocols help guard against such bias.

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