What does a questionnaire measure? (Questionnaire Methods)
A psychological construct
What is a psychological construct? (Questionnaire Methods)
A quality of interest that is not directly measurable
How are factors measured? (Questionnaire Methods)
By responses to items that measure a particular aspect of the construct
Questionnaires have polarity. What does this mean? (Questionnaire Methods)
Results show a higher or lower amount of a particular trait
What are the three main qualities of a questionnaire? (Questionnaire Methods)
- Discrimination
- Validity
- Reliability
What does discrimination refer to? (Questionnaire Methods)
If people with different scores actually differ in the construct being measured
What does validity refer to? (Questionnaire Methods)
If it measures what it intended to measure
What does reliability refer to? (Questionnaire Methods)
If the same results can be produced in different conditions
What are the three types of validity? (Questionnaire Methods)
- Content validity
- Criterion validity
- Factorial validity
What is content validity? (Questionnaire Methods)
If items measure the whole construct, not just one part of it
What is criterion validity? (Questionnaire Methods)
If the questionnaire measures the construct you want to measure
What is factorial validity? (Questionnaire Methods)
If the structure of the design contributes to the construct
What are the steps to making a questionnaire? (Questionnaire Methods)
- Choose a construct
- Decide on a response scale
- Generate items
- Collect data
- Analyse (create factors)
- Write up
What two methods can be used to operationalise data? (Questionnaire Methods)
- Numeric response
- Likert scale
What 3 issues may arise with questionnaires? (Questionnaire Methods)
- Rating scale effects
- Ambiguity
- Leading questions
What is rating scale effects? (Questionnaire Methods)
People answering differently depending on the response scale
What is ambiguity in questionnaires? (Questionnaire Methods)
Terms that may change from person to person e.g. ‘frequency’
What are leading questions? (Questionnaire Methods)
Questions that guide a response e.g. ‘do you agree’ suggests there is a correct answer
