Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below.

Statement I:Increasing the length of a psychological test improves both reliability and validity.

Statement II:The score of a test can be interpreted without referring to its norm.

ABoth Statement I and Statement II are correct

BBoth Statement I and Statement II are incorrect

CStatement I is correct but Statement II is incorrect ✓ Correct

DStatement I is incorrect but Statement II is correct

Correct answer: (C) Statement I is correct but Statement II is incorrect

Explanation

Statement 1 is correct and Statement 2 is incorrect.

Lengthening a test adds more items sampling the trait, which raises reliability.

Greater reliability in turn supports the test's validity.

Statement 2 is wrong because a score needs its norm to be interpreted meaningfully.

Without a reference norm a raw score carries no comparative meaning.

The Spearman-Brown formula predicts the reliability gain from added length.

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