In a Duchenne Smile, the Cheek Muscles Are Pulled Back

question 24

Multiple Choice

In a Duchenne smile, the cheek muscles are pulled back, and the muscles around the ________ also contract.

• A)nose
• B)mouth
• C)eyes
• D)ears

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Definitions:

Holding Constant

A method in analysis where certain variables are kept unchanged to isolate the effect of varying other variables.

Simple Linear Regression

A mathematical approach that establishes a connection between a dependent variable and a single independent variable through the application of a linear equation to the collected data.

Model

A simplified representation or abstraction of reality, typically used for explaining complex systems or predicting future outcomes.

Multiple Regression

An approach in statistical analysis where the link between a dependent variable and multiple independent variables is established.