Distinguish the four levels of measurement, give examples of each, and explain why this distinction is important.

Understanding Psychological Measurement

1. Define measurement and give several examples of measurement in psychology.
2. Explain what a psychological construct is and give several examples.
3. Distinguish conceptual from operational definitions, give examples of each, and create simple operational definitions.

4. Distinguish the four levels of measurement, give examples of each, and explain why this distinction is important.