Suppose a researcher sends a survey to 1,000 randomly selected parents with questions about their child's eating and television watching habits. the researcher then analyzes the data to see if there is a relationship between the amount of television children watch and how many sugary drinks they have on average. this is an example of what study

correlational  study

Explanation:

Correlational studies are those established to study phenomena by establishing relationships between them. That is, this type of study seeks to analyze the relationship between two phenomena and get an answer about what this relationship causes. An example of this can be seen in the question above, where a researcher wants to know how the relationship between watching television and the consumption of sugary drinks influences a child's life.

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. : )