This explanation is so obvious that I consider any study or chart that doesn't scream this at the reader in big red letters to be nothing short of propaganda.
The conclusion those "researchers" would like to draw is that the world is better than "the people" think, when the far more plausible interpretation is that the world is so horribly bad that people are scared to even talk about how they feel.
The conclusion those "researchers" would like to draw is that the world is better than "the people" think, when the far more plausible interpretation is that the world is so horribly bad that people are scared to even talk about how they feel.