We learn about social power and begin to experiment with power as young children. First, we want attention and cry at the top of our lungs until our parents come to pick us up. Later, we see something we want and we cry more in an effort to have our parents get it for us. When we are rewarded for this behavior we will toss a tantrum in every situation to get our way. This is a method of bullying those around us that we will not grow out of unless remedied during childhood. And as annoying as a tantrum is to everyone around a spoiled child, it is equally as frustrating and annoying when the behavior is exhibited by an adult.
In adult conflicts it is ideal for both parties to come to a mutually beneficial resolution. It is understood that both must sacrifice something to reach the agreement. When the tantrum play is made by one of the adults in the disagreement, an attempt is made to get 100% satisfaction at the expense of the other. It is not an understanding, and it is not consensual. The other party simply opts out of the argument to prevent the escalation of a confrontation. The behavior is presumed to be rewarded, but a new aspect is often presented. The other party may simply disregard your wants and needs completely. They may not even include you in future decisions.
In this scenario, the behavior results in total exclusion in regard to the other party. Simply spoken, when one behaves as a child they are regarded as a child. This behavior designed to wrestle control and power is highly disruptive and destructive in relationships. Throwing tantrums can also become a method of manipulation. Again, this is learned in childhood. The bullying adult seeks to sway the actions of another in their favor by exhibiting undesirable behavior.
The short term may result in a reward . However, in the long term, the tantrum only results in isolation and exclusion. The party exhibiting the behavior is now denied the credibility and respect afforded to competent adults.