It would be interesting to see how the results would differ were this method used with groups of adjacent words instead of just individual words. Analysis base

It would be interesting to see how the results would differ were this method used with groups of adjacent words instead of just individual words. Analysis based on idividual words might miss a lot of subtle context, especially since English is such an idiomatic language. For instance, focusing on individual words (or even small groups of adjacent words) may lead to mistaking a morbid joke for sadness, while a sarcastic insult might be mistaken for happiness. Still, this is an ingenious way to measure happiness, and I'm looking forward to reading future research that builds on this work.