Emotions

Determining what emotions to use in the application it seemed rather obvious to use fear, anger, happiness, sadness, surprise and disgust as they are the most prominent emotions that people use everyday. This was backed up by the research on emotions mainly by Paul Ekman although his initial list of the previous stated emotions was altered to include a wider list however the previous stated emotion or the six base emotions are a widely accepted list of emotions and are all that is really needed for the application.

For determining how to calculate when these emotions are to be used, a formula was created based on the intensity of the event, the big five personality factors and the sixteen personality factors.
Depending on what facets of the big five factors were used in the event this determines the intensity of each personality factor, for example: if three out of six facets relating to Extraversion are present at the event, intensity becomes 50% or 0.5. The characters predefined Extraversion in this case 0.5, which would mean the character isn't very social but does not shy away from it, or it means an average Extraversion value. The predefined value is them multiplied by the intensity to produce the value used in the emotion formula.
The emotion formula for each emotion are as follows:

• Fear:Neuroticism-Extraversion+Openness+Agreeableness-Conscientiousness+Apprehension.
• Anger:Neuroticism-Extraversion+Openness-Agreeableness-Conscientiousness+Dominance.
• Happiness:-Neuroticism+Extraversion+Openness+Agreeableness-Conscientiousness+Liveliness.
• Sadness:Neuroticism-Extraversion+Openness-Agreeableness-Conscientiousness+1-Liveliness.
• Surprise:Neuroticism-Extraversion+Openness-Agreeableness-Conscientiousness+Abstractedness.
• Disgust:Neuroticism-Extraversion+Openness-Agreeableness-Conscientiousness+Sensitivity.

The formula for fear is based on the idea that fear is a negative emotion so neuroticism is the first emotion then as Extraversion is a persons positive emotion it is subtracted. Openness and Conscientiousness are constant for all emotions as openness is how open you are to all emotions and conscientiousness is the self-control of a person, so openness is always added and conscientiousness is always taken away. The final of the big five is Agreeable and in the case of fear it is added as when a person is scared, feeling fear they become more agreeable and self-interested. The final part of the formula is the personality factor from the 16 personality factors that corresponds with fear which is Apprehension which represents worry and guilt as a result is added onto the formula.
The formula for happiness id similar however neuroticism the negative emotions are subtracted from Extraversion the positive emotions and the factor that corresponds with happiness, liveliness which in a sense is the representation of happiness.
The formula for sadness, which is the same for disgust and surprise, except for there corresponding factors has neuroticism first then Extraversionis subtracted from it adding openness subtracting agreeableness and conscientiousness and adding either one minus liveliness as its opposite is the opposite of happiness for sadness, Abstractedness which represents absent mindedness for surprise and Sensitivity which represents how tough or tender minded a person is for disgust.
As the formulas are so similar it can be off some times so it would return the wrong emotion. The emotion which is determined is whatever is the highest and in some cases it is a inappropriate emotion for the event.