Threats to Internal Validity of Quasi-Experiments Include

question 27

Multiple Choice

Threats to internal validity of quasi-experiments include

• A)failure of randomization.
• B)failure to follow the treatment protocol.
• C)attrition.
• D)all of the above with some modifications from true randomized controlled experiments.

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Definitions:

Still Pictures

Photographs or images that capture and freeze a moment in time, without movement.

Retinal Receptors

Light-sensitive cells located in the retina that are responsible for converting light into electrical signals, which are then interpreted by the brain as vision.

Voluntarily

Acting or done of one's own free will without external compulsion or coercion.

Eyeball

Slang for estimating or measuring something by sight without the use of instruments.