G451 Flashcards
What is inter-rater reliability?
How researchers interpretation things, this is highly reliable if all researchers overview the data or one researcher
What is reliability?
Keeping things the same, consistency e.g. All participants were woken by a doorbell
What is a re-test?
A second test, where if participants respond in the same way as the other test, shows reliability
What is correlation coefficient?
A measure of strength of correlation between 0-1, 1 meaning a strong correlation and therefore better reliability
What indicates to reliability on a graph?
The scatter of points, the closer to a straight line, the more reliable
Strengths and weaknesses of the reliability in self reports (questionnaires and interviews)
+ in structured interviews or questionnaires the same questions are asked
+ inconsistent structured interviews and questionnaires can be assessed for inconsistent answers and they can be removed
- open question can cause low inter-rater reliability as they can be interprets red differently
- people can interpret rating scales differently
- un/semistructured interviews can ask people different questions
Strengths and weaknesses of validity in self report
+ in questionnaire responses might be more truthful, especially if there responses are more personal or socially sensitive (less social desirability)
+ in semi/unstructured interviews more unexpected information can be obtained forming more insightful and accurate conclusions
- in questionnaires there may be response bias for example always ticking the same box
- an interviewer may cause the participant to lie due to social desirability bias or demand characteristics
What are the four types of question, their strengths/weaknesses and give an example of each?
Closed:
Are you happy - yes/no
Fast, easy, quantitative, lacks insight, lacks complexity
Open:
What makes you happy?
Long/hard to answer, insightful, can be complex, qualitative
Rating scale:
How happy are you on a scale of 1-10
(10 being happiest, 1 being suicidal)
Fast, easy, quantitative, lacks insight, lacks complexity
Likert scale:
How happy are you?
Very/happy/neutral/sad/suicidal
Fast, easy, quantitative, lacks insight, can be used for opinions
What are the three types of interview and their strengths/weaknesses
Structured:
High reliability, can be retested, lacks insight, higher inter-reliability, faster
Unstructured/semistructured:
Insightful, lower inter-reliability, harder to retest, longer
What is validity?
Validity is how accurate a design is, for example how close an answer is to the truth
What is internal validity?
Refers to the test used. Whether the IVs are effecting the DV or sources of error, formed from face validity and concurrent validity
What is face validity?
Whether a measure appears to test what it claims - contributing towards inter reliability
What is concurrent validity?
Whether a test will produce similar results for an individual compared to another test which assesses the same phenomenon - part of internal validity
What is external validity?
Validity outside the experiment, due to extraneous variables and ecological validity
What is ecological validity?
How close something is to a real life situation