syncratic

Of a decision, made jointly instead of individually.

The focused interviews indicated that through the life-cycle stages, the upper-middle-class families made syncratic decisions, the lower-middle-class families made syncratic and partially syncratic decisions, and the upper-lower-class families made syncratic, partially syncratic, and autonomic decisions.

[…]autonomous decisions that are equally likely to be independently taken by either of the partners are in the middle of the triangle and truly syncratic (or joint) decisions are in the outer-right corner of the triangle.

Misspelling of syncretic.

Of or relating to syncraticism.