It Is Difficult to Draw Causal Inferences in Correlational Research

question 20

Multiple Choice

It is difficult to draw causal inferences in correlational research because

• A)in correlational research variables are manipulated
• B)of the placebo effect
• C)of the social desirability bias
• D)it is difficult to tell which variable causes the other

Understand the concepts of different feeding mechanisms in animals.

Comprehend the role and production of saliva and its functions in digestion.

Grasp the basic movements and processes within the digestive tract.

Identify the roles of various cells and enzymes in the digestive system.

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Definitions:

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