There is often a connection between marital abuse (in any form, including phsysical abuse, verbal abuse, sexual abuse or economic abuse) and the continuing abuse that takes the form of get recalcitrance. The behavioral and psycological profile of these men are similar and the get is just another instrument to control the woman.
Notwithstanding the above, it is important to emphasize that there are also many women who are refused a divorce who had lived in a harmonious and loving relationship with their spouse, but for some reason the relationship turned sour and with the break up of the marriage inevitable tensions occurred. Unfortunately, as a result of the fundamental inequality in the divorce process these tensions can turn into get reclacitrance. The husband - often due to his lawyer's advice - understands that it is worth his while to delay giving the get in order to win a better divorce settlement. This is get extortion. This is an act of violence and abuse.