Looks like similar mechanics in Divinity2. Just numbers aren't displayed yet, I think. it affects your relationship with your companions. I think they should be raised with approval. Game also has a 'relationship status' or something like that, so idk why we need both of them.
The numbers ARE displayed . . . you have to right click on NPC's and use the Examine option. There Attitude is displayed, along with a little smiley face. Positive or negative values will show and impacts the price you get for buying and selling items. No idea if there are other effects.