In Washington state, the answer to this question is surprising to many people. The answer is, in a way, no on both counts, because this state’s legal system doesn’t feature the categories of “full custody” and “joint custody”. Instead, a parenting plan is agreed on by the parties or ruled on by the court, and an important part of what that plan does is lay out a schedule for where the child or children will live each day of the year.
It is fair to ask, if one parent is given an overwhelming majority of the time with the children, how is that different from “full custody”? And, considered from that angle, looking at a full custody style result and asking why we don’t just go ahead and call it “full custody”, the answer may appear elusive. The meaning of the shift in language is real though, and it’s more clearly evident when considering the process of establishing a parenting plan in the order it actually unfolds.
That is, the first step is not to decide whether you are seeking full custody or joint custody, and look towards either a supermajority of time or a much more even split accordingly. There is no such formalized dividing line in the Washington case law or court system that you have to come down on one side or the other of. Instead, you are called on to focus on exactly what type of residential arrangement would work best for the situation in your case, and to fine tune the schedule to work as well as possible.
Some of the practical implications of how de-emphasizing the idea that one parent is the main parent and one is the defeated sub-parent could play out might include: a consideration of whether, if one parent has the children for the majority of the school year, an extended summer residence with the other parent might work (considering the children’s ages and other factors). Or, the question might in some cases be considered of how much daycare or afternoon time one parent might provide for young children, even on days where the other parent will be the one with evening and overnight time.
In some cases, one parent represents a serious threat, and these cases are treated very differently. But in the usual case, there is an effort by the court to integrate both parents into the children’s lives as much as is appropriate, within the bounds set by the children’s ages, the distance between the two residences, and a number of other factors. It isn’t that cases trend towards 50/50 splits, they do not, but there is a preference for maximizing healthy ongoing relationships with both parents, and looking for appropriate ways to schedule time to do so.