Reliability and validity

Question 1

What is meant by validity?

Answer 1

How accurate the results of a test are

Question 2

What is meant by reliability?

Answer 2

The consistency of the measuring device and can get similar results on another occasion

Question 3

What is meant by inter-observer reliability?

Answer 3

A way of observing the reliability of observations or content analysis- observers independently rate the observation

Question 4

What is meant by test-retest reliability

Answer 4

A test is taken on two occasions and the results correlate

Question 5

How would you improve the reliability of an experiment?

Answer 5

-standardised instructions= making sure all participants are recieve exactly the same instructions
-carefully controlled procedures
-reducing extraneous variables
-using a non-biased sample

Question 6

What is meant by internal validity?

Answer 6

The study measures what it intends to measure

Question 7

What is meant by external validity?

Answer 7

The results relate to situations outside of the research situation

Question 8

What is meant by ecological validity?

Answer 8

The results can be generalised to other places/situations

Question 9

What is meant by temporal validity?

Answer 9

The results can be generalised to other times in history

Question 10

What is meant by population validity?

Answer 10

The results can be generalised to other people

Question 11

How can you improve the validity of an experiment?

Answer 11

-Standardised instructions= making sure all participants recieve exactly the same instructions
-Carefully controlled prodedures= making sure you carry out the experiment the same way each time
-Reducing extraneous variables
-Using a non-biased sample