Arthur C. Nielsen, Sr.
Chairman, A. C. Nielsen Company, 1931

In 1931, Arthur C. Nielsen, Sr., wrote the ACNielsen Code, defining the principles that would guide ACNielsen to global leadership in marketing research. The Code remains relevant today and continues to guide our business.

Impartiality
Be influenced by nothing but your clients' interests. Tell them the truth.

Thoroughness
Accept business only at a price permitting thoroughness. Then do a thorough job, regardless of cost to us.

Accuracy
Watch every detail that affects the accuracy of your work.

Integrity
Keep the problems of clients and prospects confidential. Divulge information only with their consent.

Economy
Employ every economy consistent with thoroughness, accuracy and reliability.

Price
Quote prices that will yield a fair profit. Never change your price unless warranted by a change in specifications.

Delivery
Give your clients the earliest delivery consistent with quality - whatever the inconvenience to us.

Service
Leave no stone unturned to help your clients realize maximum profits from their investment.