Which of the following methods are used to measure reliability in research?

1.Chain-referral sampling

2.Test-retest

3.Split-half

4.Inter-rater

5.Judgemental test

A1, 2 & 3 only

B1, 4 & 3 only

C2, 3 & 4 only ✓ Correct

D3, 4 & 5 only

Correct answer: (C) 2, 3 & 4 only

Explanation

Reliability is measured through test-retest, split-half, and inter-rater methods.

Test-retest checks stability by repeating the same measure over time.

Split-half correlates two halves of an instrument to gauge internal consistency.

Inter-rater reliability compares scores given by different observers.

Chain-referral is a sampling technique, unrelated to reliability.

A judgemental test is not a recognised reliability measure.

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