Reliability

What does reliability refer to in the context of research instruments?

• Accuracy of measurements

• Speed of measurements

• Size of measurements

• Color of measurements

Which type of reliability ensures the same results are obtained when a test is repeated over time?

• Test-retest reliability

• Internal consistency reliability

• Inter-rater reliability

• Parallel forms reliability

What is the split-half technique used for in determining reliability?

• Correlating two different researchers

• Correlating two different instruments

• Correlating one-half of items with the other half of an instrument

• Correlating two different tests

Which of the following is NOT a potential source of error in reliability?

• The wording of questions

• The color of the instrument

• The physical setting

• The respondent's mood

What is the purpose of the inter-rater reliability measure?

• To measure consistency of scores with ratings

• To measure consistency of colors

• To measure consistency across different researchers

• To measure consistency over time

Which formula is used for stepped-up reliability estimation?

• Spearman-Brown formula

• Product moment correlation formula

• Cronbach's Alpha formula

• Split-half formula

What is the main focus of external consistency procedures in determining reliability?

• Comparing findings of two different tests

• Comparing findings of two different researchers

• Comparing findings of two different instruments

• Comparing findings of two independent data collection processes

Which metric is frequently used for assessing inter-rater reliability?

• Mean

• Standard deviation

• Kappa

• Correlation coefficient

What is the purpose of using the Spearman-Brown formula in reliability estimation?

• To compare findings of two different tests

• To adjust for test length in estimating reliability

• To measure consistency across different researchers

• To calculate the standard error of measurement

How does test-retest reliability differ from internal consistency reliability?

• Test-retest reliability measures consistency over time, while internal consistency reliability measures consistency within the test

• Test-retest reliability measures consistency within the test, while internal consistency reliability measures consistency over time

• Test-retest reliability measures consistency across different researchers, while internal consistency reliability measures consistency within the test

• Test-retest reliability measures consistency within the test, while internal consistency reliability measures consistency across different researchers