A theoretical description of a construct (variable)
How a construct is measured in a study, providing concrete details like the measure used and scoring
A process of systematically collecting and evaluating evidence to test ideas and answer empirical questions
Making careful observations under various controlled conditions to test ideas
Questions about how the world actually is that can be answered by systematically observing it
Whether a measure accurately measures what it intends to measure; measurement accuracy
Refers to the consistency of a measure across time points or between raters
