American Darren is quick to express his feelings, both negative and positive-displays of emotion that Japanese Itsumi often finds overly candid and demonstrative. These differences illustrate which cultural spectrum of behavior?

Individualism - Collectivism

Explanation:

Individualism tends to focus on individual goal and right, and most times being motivated or encouraged by personal or individual benefits or reward.

Collectivism tends to focus not on individual goal but group goals. This means that, it values the group goals or benefit more than the individual benefit.

It has been researched and discovered that American are individualist while Japan or china are collectivist. This because, Japanese prefer to reflect the views of their culture and leaders rather than their personal view, also prefer to have small friends that can be trusted to having plenty friends, while the Americans practice freedom of choice, meaning that they are free to do what they want to do at any time based on their own or personal free will.

In this case, Darren exhibits individualism while Itsumi exhibits collectivism.