Which of the Following Is TRUE

question 38

Multiple Choice

Which of the following is TRUE?

• A) A study lacking external validity may nevertheless have high internal validity.
• B) Internal validity is a matter of degree, whereas external validity either exists or doesn't exist.
• C) In most experiments we can obtain proof that the observed response is due to our experimental manipulations.
• D) Both A and B.
• E) A, B, and C.

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Definitions:

Organ Systems

Groups of organs that work together to perform complex functions in an organism.

Ecosystem

A community of living organisms and their physical environment interacting as a system.

Physical Environment

The external surroundings and conditions in which an organism lives, including both natural and man-made factors.

Community

An interacting group of various species living in a common location.