Measurement Flashcards
What does Operationalization mean?
The translation of a concept into actual measurements.
What Is Reliability?
The level of random error that exists when trying to measure a concept. Less error = more reliable
What is Validity?
the quality of being logically or factually sound. Can be considered to be systematic errors in a measurement.
What are the three types of validity
Face validity
content validity
External validity
What is Face Validity?
When a measurement makes sense in what it Is supposed to do
What is content Validity?
Content validity comes from a measure that has indicators to cover the full range of the concept - without any exclusion.
External Validity
Occurs when data collected data from a study can be generalized outside of the study.
What are the tradeoffs of moving either up or down the abstraction ladder?
If you move up, validity increases, but as you move down things become more concrete and therefore, more reliable.
What is Quantitative data?
Research that focuses on quantifying observed data. emphasis on the testing of theory
What is qualitative data?
Research that focuses on non-numerical Data.
What is the advantage of qualitative research?
Provides a deeper and more holistic understanding of the given topic
What is an advantage of quantitative data?
Provides objective and generalizable results. (Helps with external validity)
What is a latent variable?
It is a variable that is not directly measurable but can be supported by other indicator variables.
What are the two key ingredients to measurements
Reliability and validity
Give two examples of categorical measurement.
Nominal and ordinal
