31: Measuring a Construct: Observable Variables


Measuring a Construct

  • Since there is no direct way to measure a construct, we must first determine what observable variables might represent the construct.
  • IOW: Intelligence can not be observed, but we can observe the use of vocabulary, ability to do math, or time it takes to complete a puzzle or a maze.
  • But do these observable measurements really represent the construct. How do you define intelligence? The score on an intelligence test?