David is listening to his grandson tell him a story. He is finding that he is having difficulty following what his grandson is saying. When his grandson says, "I had fun," David thinks he said "I had sun." What is David experiencing?

Presbycusis                                    

Explanation:

Presbycusis: The term "presbycusis" is defined as the gradual process of hearing loss that tends to occurs in most of the individuals as soon as they grow older. However, hearing loss is generally a very common disorder which is connected with ageing and almost thirty to thirty-five per cent people with sixty-five years of age encounters hearing loss.

Symptoms:

1. Speech of another person's sound slurred or mumbled.

2. Difficulty in understanding a specific conversation, etc.

In the question above, David is experiencing presbycusis.

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. : )