Quiz – FACS Fundamentals

Question 1 of 6

1. Question

Who developed the Facial Action Coding System (FACS) in 1978?

Ekman and Friesen

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Navarro and Karlins

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Matsumoto and Hwang

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Mehrabian and Pease

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Question 2 of 6

2. Question

How many distinct action units does FACS catalog?

Forty-three

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Seven

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Twelve

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One hundred

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Question 3 of 6

3. Question

According to the script, how long do the micro-expressions identified by FACS last?

One hundred to five hundred milliseconds

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One to five seconds

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Two to three seconds

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Ten to twenty milliseconds

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Question 4 of 6

4. Question

What makes FACS different from interpretive emotion reading?

It provides objective, anatomically grounded classification

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It relies on the observer’s intuition

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It ignores facial muscle activation

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It labels emotions without observing the face

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Question 5 of 6

5. Question

Match each FACS concept with its correct description.

Sort elements

A specific facial muscle contraction
A concealed emotion lasting milliseconds
Modifies expression frequency across populations
Risk of over-interpreting without corroborating evidence

Action unit

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Micro-expression

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Cultural display rule

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Confirmation bias

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Question 6 of 6

6. Question

In FACS, which bias poses a risk when over-interpreting micro-expressions without corroborating behavioral evidence?

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