reliability✅

Question 1

what is the definition of reliability?

Answer 1

extent to which a test or measurement is consistent results. if a study is related using the same methods design and measurements → the same results should be obtained

Question 2

what is internal reliability?

example?

Answer 2

how consistent something is within itself

eg. personality questionnaires should measure the same difference between high int. locus of control and low int. LOC

Question 3

what is external reliability?

when does this only apply?

eg?

Answer 3

• extent to which a test measures consistently overtime
• for a variable the stays the same overtime
  eg. we cant say a personality test is unreliable bc someone gets diff. results later in life, their personality may have changed …. replicating a lab study

Question 4

what are the 2 ways of assessing reliability?

how are the two correlated?

Answer 4

1️⃣ test - retest reliability

2️⃣ inter - observer reliability

• if there similar, its reliable. if dissimilar, its not.

Question 5

1️⃣ test - retest reliability:

what is it?

when is something considered reliable?

Answer 5

• method of assessing the reliability of a Q’aire or psych. test by assessing the same person on 2 occasions
• if each time the same / similar findings are produced, its considered reliable. scores can then be correlated to make sure they’re similar.

Question 6

2️⃣ inter - observer reliability:
what is it?

how is it measured?

whats the general rule?

Answer 6

• agreement between 2+ observers involved in observations of behav.
• correlating the observations of more than 2 observers
• ‘reliability= it ain’t great unless its … +.8’ →→→ thats the correlation coefficient