Objectivity, reliability and validity

Objectivity

Study must be free from personal interpretation and bias, through standardisation

AO3 of objectivity

Findings will have higher internal validity. However, hard to apply to qualitative data producers, like questionnaires, as it is unpredictable and harder to standardise.

Reliability

To be consistent with the study procedure and its findings

AO3 of reliability

Allows replication of the study for consistency and confidence in results. Hard to achieve if it's a field experiment, as it is unpredictable and cannot be standardised.

Validity

Ensures the study is measuring what intends to measure and is generalisable to read life situations

AO3 of validity

Findings can be applicable beyond the study. However, high internal validity often means low ecological validity, due to controlled variables