Measurement Concepts
Using accurate and effective methods to measure data that is collected during a research study is essential. This section provides an overview of some of the basic terminology related to measurement concepts.
Construct
Definition An abstract concept used in research (e.g., intelligence, stress). Example A research...
Measurement
Definition The process of assigning numbers or labels to phenomena according to specific rules. ...
Operational Definition
Definition A precise explanation of how a concept will be measured in a study. Example A researc...
Reliability
Definition The consistency of a measure or test over time or across different observers. Example...
Validity
Definition The degree to which a test or study measures what it claims to measure. Example A qu...