Using the Internet for Research May Lower the External Validity

question 38

Multiple Choice

Using the Internet for research may lower the external validity of a study because users are more likely to share similar characteristics. In this case, volunteers of online surveys are likely to:

• A)be college educated.
• B)have a lower income.
• C)live in rural areas.
• D)be older adults.

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Definitions:

Secretory Vesicle

Membrane-bound sacs within cells that store and transport substances which are to be secreted or released.

Microtubule

Hollow tube composed of tubulin, measuring approximately 25 nm in diameter and usually several micro meters long. Helps provide support to the cytoplasm of the cell and is a component of certain cell organelles, such as centrioles, spindle fibers, cilia, and flagella.

Lysosomes

Organelles in cells that contain enzymes used to break down and recycle cellular debris and foreign substances.

White Blood Cell

A type of immune cell that is crucial in defending the body against infection and disease.