'Love test' predicts good marriage

words:
(1) newly-weds: 新婚夫妻
(2) unconscious: 無意識、無視的
(3) admitted to: 被承認、被接受為事實
(4) vice versa: 反之亦然
(5) follow-up: 後續

sentence:
1.The test involved showing /one of the couple/ a photograph of their partner/ for a third of a second.
2.If/ they had/ unconscious negative feelings/ towards/ their partner.
3.Researchers found/ that/ those with unconscious negative feelings/ had/ them gradually surface.

grammar:
1.To "make" someone do something implies a certain forcefulness. You compel the person to do something they would not otherwise do. 
ex:
The mother made her kid do his homework.
Did teacher make you memorize all the poem?

2.To "have" someone do something is more neutral, although it implies that you are in a dominant position that automatically gives you the right to give orders and tell others what to do. That "dominant" position could certainly be due to the fact that you are paying someone to do something for you. 
ex:
I had my sister do my exercises.
They had their mothers pick them at school.

3.To "get" someone to do something implies effort, convincing, patience, etc., and therefore a relation between equals. You are not in a position to simply tell the person what he must do. Instead, he has to agree to do it on his own terms. 
ex:
I got her to let me copy her homework.
He'll get them to arrive before 10 pm.

To "get" something done & to "have" something done are essentially synonymous in the context where they imply (but do not specify) the person who will do the work. The version with "have" sounds slightly more elegant (or snobby, depending on your perspective).