When her preschooler began humming the jingle from a McDonald’s commercial, Cleveland pediatrician Susan Connor decided to analyze the sponsorship spots that surround TV shows for tots. She found that fast-food companies are the predominant sponsors of preschool fare on PBS Kids and the Disney Channel, both of which “promote themselves as ad-free,” reports the Associated Press. The study, published this month in the medical journal Pediatrics, concluded that the ads targeting preschoolers on Nickelodeon and sponsorship messages on PBS and Disney “took similar approaches and used similar appeals, seeming to promote the equation that food equals fun and happiness.” [abstract]