For acquisitions, Thomson carries out a purchase valuation assessment, including the
assessment of the valuation of intangible assets. For material amounts, Thomson relies on
independent experts to determine the amount of intangible assets. With respect to customer
relationships, the valuation methodology used is generally based on the discounted future cash
flows expected to be generated by the existing customer portfolio at the acquisition date. With
respect to trademarks, the valuation methodology used is based on royalty rates which could
reasonably be paid by third-party licensees on similar trademarks. Such intangibles are not
amortized but are subject to periodic impairment tests using the same criteria as applied in the
initial valuation.