Reliability & Validity

This is an example of...

• Reliability but Not Validity

• Validity but Not Reliability

• Neither Validity or Reliability

• Validity and Reliability

Validity is a concept that... (choose the best answer)

• Measures the consistency of the measurement taken under the study.

• Covers the the full range of the issue set for the study

• Measures the accuracy of the concept that it supposes to measure.

A thermometer is measuring the body temperature of healthy persons as 38 Degree Celsius in many times. This instrument is considered as ...

• reliable

• valid

• both valid and reliable

• not valid

Whether a measure is actually measuring what it claims to be measuring - this refers to ...

• Reliability

• Validity

Reliability refers to the extent to which result are ________________

Participants completed a personality test. A week later, the researcher asked the participants to complete the test again and revealed consistent results. This shows that the test is:

• Valid

• Reliable

Refers to the level of consistency of an instrument and the degree to which the same results are obtained when the instrument is used repeatedly with the same individuals or group.

• Validity

• Reliability

• Variance

• Stabilization

Which one of these won't help to improve validity

• Using appropriate equipment

• All variables controlled

• A method that tests the hypothesis

• Changing more than one thing in the experiment.

To ensure results are reliable the experiment should be

• Done once

• Repeated

• Done as exactly the same as the method outlines

• Repeated if necessary

A reliable experiment produces results which

• are consistent

• vary greatly

• are different from sample answers

• are not consistent