The relationship between working memory and emotion I stumbled up on this article about working memory.
Within a table of indicators of good or poor working memory, it listed the following for adult working memory:

Indicators that a working memory needs exercise

Frequently late to work
Often underestimates time required for a
task
Has problems breaking a project into manageable steps
Often
loses temper with children and spouse


It is the last point:


Often loses temper with children and spouse


This brings me to the question:
Are there  studies examining the relationship between working memory and emotion?
If so what are the results?
Working memory and other aspects of executive function (attention, for instance) are linked. There is evidence that improving self control improves emotional outbursts (see article below).  So, improving working memory should improve self control, which should prevent emotional outbursts.   

See: Denson, T. F., Capper, M. M., Oaten, M., Friese, M., &amp; Schofield, T. P. (2011). Self-control training decreases aggression in response to provocation in aggressive individuals. Journal of Research in Personality, 45(2), 252–256. doi:10.1016/j.jrp.2011.02.001