These results are interesting indeed, but I'd like to offer a couple of observations for criticism from you guys. Although Pam's original test was to see how OE affected career performance. I think in these cases Over Emotional can serve a major role regardless because they will require you to do less to reach that coveted green mood bar and green career mood smiley. For a pro player going after a career, they will have to do less to achieve each of these benefits. Once the career mood metric smiley is green, it's done. It can't get better. In some instances if you can keep the mood metric fine without going out of the way OE can be ditched, as far as careers go.
Someone on the forum also told me that there's a difference in lifetime happiness point generation the higher the mood bar. With these results I question that idea. Consider this: Pam is a pro player, she's very good at the game and can maintain consistency throughout two tests. The clumsy Sim managed to earn more points. This seems odd, because the over-emotional Sim must have always had a higher "happiness score" given the same moodlets and I know Pam wouldn't let them stay unhappy, negating the potential negative effects of the trait.
This results in a 1/5 higher mood bonus no matter what the OE Sim does. While we can chalk some of this up to random variation in the wishes offered to the Sim, I must wonder if meeting the positive happiness gain on the mood bar is actually inferior to having a maximized mood bar. True, sometimes the two Sims in the test would be equal, but over that course of time the OE Sim would have to, on average, have a higher mood total yet clumsy won.
I'm reevaluating my stance on this trait because of this, unless someone can provide concrete evidence that having the mood bar completely maximized makes a real impact on happiness point generation. However we all know that the bulk of lifetime happiness will come from completing wishes. From here, it looks like meeting "green" on either career or mood is quite enough and the only role OE could serve is requiring you to perform fewer tasks to reach either of those "greens".