# Operational definition > A definition that describes a concept in terms of the specific procedures, measurements, or operations used to observe or measure it, rather than by its abstract or theoretical meaning. A definition that describes a concept in terms of the specific procedures, measurements, or operations used to observe or measure it, rather than by its abstract or theoretical meaning. ## Examples - **Intelligence**: "The score obtained on the Stanford-Binet IQ test." - **Hunger**: "The number of hours since last meal." - **Customer satisfaction**: "The average rating given on a post-purchase survey using a 5-point Likert scale."