The Big Five model seems to best capture personality because: 1. studies show that these descriptions show up over a wide range of cultures. 2. people only use five words to describe other people. 3. studies show that these descriptions vary according to a person's age. 4. genetic differences are more important than environmental influence

1. studies show that these descriptions show up over a wide range of cultures.

Explanation:

The Big Five Model consists of five broad personality traits (opennes to experience, agreableness, conscientiousness, extraversion, and neuroticism) that have been measured in different cultures around the world.

In personality theory, the Big Five Model is perhaps the psychological scheme with most prestige for that same reason. Big Five Model tests have been made in Chinese, German, Hindi, Japanese, and several other languages.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.