In the following passage, correct any errors.

In the 1970s, market researchers discovered that the most young children were unable to tell the difference between the television shows they watched and advertisements for products. Because of this discovery, it was an attempt in 1978 to put legal restrictions on television advertisements aimed at too young children, but advertisers objected. The industry of marketing to children has being growing steadily since then. Between 1978 and 1998, the amount of money directly spent by children age four to twelve increased from less than three billion dollars a year to almost twenty-five billion dollars, and is not end in sight. Researchers believe that children in that age group also convince their families to spend another two hundred billion dollars a year-such as when a young boy, for example, convinces her mother to purchase a more expensive computer than she might otherwise have bought. Marketers are easy to decide to target this young market-there is their job to aim at consumers who can be convinced and who will spend most money. 

However, few other groups have also helped marketers figure out the best way to target a too young audience. Many child psychologists are now been asked to join market-research firms to provide information about how to reach children more effectively. Some members of the American Psychological Association lobbied their organization in 2002 to discipline APA members who have helped advertisers target children, but the APA has no taken action yet. The most psychologists feel that the marketers and their advisers have being allowed very much freedom to appeal to children who cannot make informed decisions about products, but the situation does no seem likely to change.