Did they originate at some particular time? Who created them? Who uses or defends them?

1. compare and contrast Uncertainty reduction theory and social penetration theory?

QUESTIONS
 What are they about?
 Did they originate at some particular time?
 Who created them? Who uses or defends them?
 What is the central focus, claim, or goal of each? What conclusions do they offer?
 How are they applied to situations/people/things/etc.?
 Which seems more plausible to you, and why? How broad is their scope?
 What kind of evidence is usually offered for them?