Megan is a 29-year-old, single investment banker who lives in an apartment in a large city. After a particularly long and difficult workday, she relaxed in her apartment by reading through one business magazine and two fashion magazines. When questioned by a researcher the next day, she could clearly recall two holiday ads and vaguely remembered one ad for a personal computer from among the nearly 100 ads she had seen in the three magazines. However, she could recount in detail the articles she had read and even recalled the titles of articles that she had not read. How can you explain this?