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Summary Module & Lecture 4 of IRM: Reliability and Validity
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Module & Lecture 4 of IRM: Reliability and Validity Gronmo Security Studies Leiden Univeristy Summary
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Module & Lecture 4 of IRM: Reliability and ValidityStudy online at https://quizlet.com/_dbs9t2
1. What is Conceptualiza- Taking an abstract construct and turning it into a
tion? conceptual or theoretical definition
2. What is Operationaliza- Abstract theory and a general hypothesis into pre-
tion? cise phenomena
By measuring, observing, and experimenting
3. How to proceed with 1. Concepts =
Operationalization (3)? Specify the concepts of the research and transform
the concepts into measurements (mandatory)
2. Indicators/Items =
Determine the indicators or indexes (mandatory)
3. Dimension =
Determine the dimensions (if necessary)
4. What is an example of 1. Concept:
Operationalization? Quality of Life
2. Dimension:
Physical, Psychological, and Social
3. Items/Indicators:
Illness, Anxiety, Family Interaction
5. What is Reliability? - The consistency with which the same event is
repeatedly measured.
- Scores are consistent across repeated testing.
- Quantitative
6. What is the difference Positive:
between a Negative If we see high/low scores on one variable, we see
and a Positive Correla- high/low scores on the other as well.
tion Coefficient?
Negative:
1/8
, Module & Lecture 4 of IRM: Reliability and Validity
Study online at https://quizlet.com/_dbs9t2
If we see high scores on one variable, we see low
scores on the other
7. How does a Correlation - Positive coefficent
Coefficient work in Re- - r should at least be 0.7
liability? - r = 0 -> no correlation
8. What are the 2 Types of 1. Internal
Reliability? 2. External
9. What is Internal Relia- Consistency across items in a test
bility?
10. What are 2 Types of In- 1. Split-half Internal Reliability
ternal Reliability? 2. Average Inter-Item Reliability
11. What is Split-half Inter- - Splitting items on the test in equal halfs and corre-
nal Reliability? lating the scores on one half with the other half.
- Biggest problem is how to divide the items so that
the halfs are in fact equivalent.
12. What is Average In- Items are kept together and the correlation coeffi-
ter-Item Reliability? cient is correlated between all pairs. From all these,
the average correlation coefficient is calculated.
13. What is External Relia- Consistency from one use to another
bility?
14. What are 2 Types of Ex- 1. Test-Retest External Reliability
ternal Reliability? 2. Inter-Rater External Reliability
15. What is Test-Retest Ex- - A test is repeated on a different occasion.
ternal Reliability? - - Problems with this method are that people will get
better at the second test and they will remember the
test.
- Can be controlled by alternate forms reliability,
which means that you give a different but equivalent
on the second occasion.
2/8
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