Adifferentiation between two similar stimuli when only one of them is consistently associated with the us is called _

The answer is "Stimulus Discrimination".
“us” in the above question stands for  unconditioned stimulus. Discrimination is a term utilized as a part of both operant and classical conditioning. It includes the capacity to recognize between one stimulus and similar stimuli. In the two cases, it implies just reacting to specific stimuli yet not to those that are similar.

if interdependence implies a two-way dependence, and if each partner is equally dependent on the other for success, then there is an equal commitment to the making the partnership successful. the advantage is sustainability of the relationship, the disadvantage is that decisions are "democratic" and therefore may take longer to reach and more likely to be a compromise (which is not always the best solution). as the interdependence moves away from equality, the decisions become more influenced by the more independent partner. in the extreme the relationship becomes more dictatorial and more like "master-slave". generally the relationship has less commitment in both directions and is more likely to be temporary.

if one generalizes (and one shouldn't), equity partnerships, which is probably what is implied by interdependence, can be slow to progress or change but durable. the extreme alternative, independent-dependent partnerships tend to be efficient but more fragile.

hope this but you will have to site your own evidence. : )