Chapter 5 Flashcards
Code
Nominal measurements transferred into a code
Concurrent validity
Does the measure correlate with other measures designed to measure the same construct?
Construct validity
Does the measure capture the underlying entity it is supposed to measure?
Content validity
Does the measure cover all relevant aspects of what I intend to measure?
Convergent validity
The measure correlates with measures of conceptually related entities
Criterion validity
Is my measure predictive of things it is supposed to predict?
Demographic
Legitimate and common measurements
Divergent validity
The measure does not correlate with measures of conceptually different or unrelated entities
Established measures reliability
Comparison from the results obtained from the measure you are developing and the results obtained from a known, tested measure that has been designed for the same purpose
Expert/panel validity
Do experts agree that this measure measures what it is supposed to measure?
Face validity
Does it look like it measures what is is supposed to measure?
Inter-item reliability
Check that the individual questions in a question set are consistent in their results and capture the same concept
Internal reliability
Refers to how well the items in a test or questionnaire measure the same concept and are consistent with each other.
Interval
Allow statistical calculations
Likert scale
A statement with scales
Measurement
The process of finding out whether people or media content have more or less of an attribute we are interested in
Numbers
Assign value and relativity to a phenomena
Numerals
Labels
Nominal
Essentially labels
Ordinal
Allow rank odering
Phrenologists
Argued that there was a relationship between cranial size and shape and mental attributes
Predictive validity
Does the measure predict future behaviour?
Rank order questions
Ordinal measurements
Ratio
Allow more sophisticated statistical operations
Reinfication
The mistake of treating an abstract concept as if it were a real, concrete thing.
Reliability
Consistency of a measurement
Scales
Measurements devices used to locate an individual’s ranking on some attribute
Semantic differential scale
Pair oppisite ideas toward a concept or object and invited each respondent to decide where between the two opposites her or his opinion lies
Split-half technique
Check if there is a strong correlation among the responses to these questions, because they were designed to measure the same thing
Test-retest
Checks if the test will produce the same results at two different times
Validity
Are you actually measuring what you want to measure
