We show that the frequency of word use is not only determined by the word length  and the average information content , but also by its emotional content. We have analyzed three established lexica of affective word usage in English, German, and Spanish, to verify that these lexica have a neutral, unbiased, emotional content. Taking into account the frequency of word usage, we find that words with a positive emotional content are more frequently used.
Positive words carry less information than negative words
Garcia D, Garas A and Schweitzer F
EPJ Data Science 2012, 1:3 (18 May 2012)