The document summarizes a two-phase lab study that examined how people process radio advertisements. In phase one, undergraduates listened to radio ads with varying content and their physiological arousal was measured. Ads with less predictable language led to increased skin conductance, a sign of arousal. In phase two, another group assessed the predictability of words in cloze procedures of the ad transcripts. More unpredictable words had higher entropy scores. The results suggest that less predictable language in ad copy leads to greater listener excitement and potentially better memory of the content. In conclusion, copywriters should choose words carefully as each one can impact how the ad is processed.