Emotion

Emotion is a gameplay feature introduced in The Sims 4. Emotion is a core part of a Sims's simology. Emotion is similar to mood, but is more easily affected by in-game events and social interactions with other Sims. The current emotional state of a Sim is depicted in the lower left corner of the screen while playing. It is also noted that some objects in-game can affect the emotions of some Sims, though the Sim has to already be feeling a particular way in order for an object to affect them emotionally. Sims that are severely emotional can die from their emotions.

Emotional states

 * Angry - Enraged - Furious
 * Bored : Currently Unknown. Received when the Fun Need is low.
 * Confident - Very Confident : Helps Social Related Performance. Can be received from the Self-Confident trait when waking up, practicing speech in front of a mirror or when winning a fight with a Sim.
 * Cranky : Currently Unknown, expected to improve a Sim's inventing abilities. Currently Unknown
 * Dazed : Currently Unknown.. Currently Unknown
 * Embarrassed - Very Embarrassed : Currently Unknown. Can be received from being humiliated in a discussion while multiple Sims are present.
 * Energized : Helps sports related performance. Can be received from drinking Energy Drinks, Jogging or taking a quirky shower
 * Fine : The default emotional state of a Sim. Happens when a Sim doesn't have any moodlets.
 * Flirty - Very Flirty - Passionate : Makes Sims better at romantic interactions. Can be received from Steam Showers and successing in doing romantic social interactions.
 * Focused : Boosts Logic performance. Can be received from practicing Chess, using the telescope, microscope or reading a book.
 * Happy - Elated : Sim performs a happier variant of actions. Also boosts Social Peformance. Can be obtained when Good Events happen, and when all the Needs are high.
 * Inspired : Helps Sims create better paintings, food, drinks and other craftable items. Can be received by taking a thoughtful shower, using the microscope and the telescope.
 * Hysterical : Negatively Impacts Social Interactions. Can be received when the Sim has the Insane trait.
 * Playful - Very Playful : Helps with social interactions.
 * Uncomfortable - Very Uncomfortable : Happens when a Sim has negative moodlets that derive from Low Needs.
 * Sad - Very Sad - Currently Unknown : Currently Unknown
 * Stressed  Sim does the more stressful variants of actions. Can be received from working and working hard.