In the English-speaking part of the world, two-party system is the most common. For example, in the US the two parties are the Democrats and the Republicans.
In many other countries three-and multiple party systems are more common and it is uncommon that a government is not a coalition of two parties (with one or more parties in the opposition)
That would be dissociative identity disorder
America did not enjoy much of the early years because of continuous war. When entertainment came, it was a way of escaping from the tensions that war had brought. Advertisements, however, were more focused on the needs of an individual than of the many people. They tried to do research on the war to create an inviting atmosphere on their advertisements. Thus, it brings comfort to individual's needs. Brand names also came out on products to remember it.
Half of all marriages end in divorce.
The gap between richer and poorer Americans has grown.
Fewer adults are marrying.
Non-traditional family structures have become more common.
Contemporary family is marked by diversity. The new modern family arrangements allow for various configurations. The present complexity around the family issue is repeatedly pointed out in the bibliography; a single concept is insufficient to cover it, several configurations are possible.
The dependent variable is the mood of the participants.
The study aims to assess how the level of exercise (measured by the amount of time spent) affects another variable, that, in turn, will be the dependent variable: the mood of the participants. The aim of the study is to conclude whether it is possible or not to infer causality between those two, in other words, to see whether different levels of exercise (<em>the cause</em>), trigger the emergence of different types of mood (<em>the effect</em>).