What Is the International Affective Picture System

What is the International Affective Picture System?

A) A well-validated set of pictures of emotional scenes chosen to elicit a variety of positive and negative affective states
B) A large database of photos of facial expressions produced by people from different cultures that allows researchers to study the perception of facial expressions
C) A time-consuming technique for coding facial expressions in which trained coders analyze photos for changes in the facial action units
D) A set of nonverbal Likert-type scales involving line drawings of manikins that participants can use to indicate their feeling states