The word "impact", when used in the phrase "economic impact analysis", has two somewhat different interpretations within the economics of the arts and culture.
Determining the Value of Cultural Goods: How much (or how little) does contingent valuation tell us?
What does CVM tell us about the value of cultural goods and services, and what does it leave out?
Lasting Effects Conference Summary and Edited Transcript (PDF) — Edited for clarity as well as concision, this document highlights the major themes of this conference. It provides a clear and brief introduction to current thinking about economic impact analyses. This document also contains a very informative introduction by Jonathan Katz and a glossary of economic terms.