Research Methods Flashcards
Objective data
Data is directly observable or measurable
Subjective data
Data relates to people’s perceptions or feelings
Quantitative data
Data that is numerical
Qualitative data
Data that is non-numeric
Reliability
Refers to the consistency of a measure
Validity
Refers to the accuracy of a measure
What does reliability tell you?
The extent to which results are reproduced when research is repeated under the same conditions
What does validity tell you?
The extent to which results really measure what they are supposed to measure
How is reliability assessed?
By checking the consistency of results across time, different observers and parts of the test
How is validity assessed?
By checking how well the results correspond to theories and other measures
How does reliability relate to validity?
A reliable measurement is not always valid: the results may be reproducible but not correct
How does validity relate to reliability?
A valid measurement is generally reliable: if results are accurate, they should be reproducible
Advantages of open questions
Respondents can answer on their own terms, allows unusual responses to be derived, provide respondents with freedom to elaborate, useful for exploring new areas
Disadvantages of open questions
Time consuming, answers have to be coded, requires effort from respondents, inconsistent
Advantages of closed questions
Easy to process answers, comparable answers, clarifies question for respondents, easy to complete