  Human social behavior is influenced by individual differences in social
preferences. Social value orientation (SVO) is a measurable personality trait
which indicates the relative importance an individual places on their own and
on others' welfare when making decisions. SVO and other individual difference
variables are strong predictors of human behavior and social outcomes. However,
there are transient changes human behavior associated with emotions that are
not captured by individual differences alone. Integral emotions, the emotions
which arise in direct response to a decision-making scenario, have been linked
to temporary shifts in decision-making preferences.
  In this work, we investigated the effects of moderating social preferences
with integral emotions in multi-agent societies. We developed Svoie, a method
for designing agents which make decisions based on established SVO policies, as
well as alternative integral emotion policies in response to task outcomes. We
conducted simulation experiments in a resource-sharing task environment, and
compared societies of Svoie agents with societies of agents with fixed SVO
policies. We find that societies of agents which adapt their behavior through
integral emotions achieved similar collective welfare to societies of agents
with fixed SVO policies, but with significantly reduced inequality between the
welfare of agents with different SVO traits. We observed that by allowing
agents to change their policy in response to task outcomes, agents can moderate
their behavior to achieve greater social equality. \end{abstract}
