Validity and Reliability

It is a measure of internal consistency, that is, how closely related a set of items are as a group.

• Cronbach's Alpha

• Stability Test

• Internal Consistency

The researcher determines the validity by looking at the features of the instrument.

• Construct Validity

• Content Validity

• Face Validity

It measures by subjecting the instrument to an analysis by a group of experts who are knowledgeable about the subject both in theory and practices.

• Construct Validity

• Content Validity

• Face Validity

This refers whether the test corresponds to its theoretical construct.

• Construct Validity

• Content Validity

• Face Validity

It is determined by administering both the new test and the standardized test to a group of respondents, then finding the correlation between the two sets of the scores.

• Concurrent

• Predictive

• Consistency

It refers to how well the test predicts some future behavior of the examinees .

• Consistency

• Concurrent

• Predictive

It refers to the consistency of results.

• Validity

• Reliability

The ability of the instrument to measure what it intends to measure.

• Validity

• Reliability

The same test is given to a group of respondents twice.

• Internal Consistency

• Test-retest or Stability Test

• Equivalence Test

Items sought must be correlated with each other and the test should be internally consistent.

• Internal Consistency

• Test-retest or Stability Test

• Equivalence Test