An Investigator Conducts an Experiment Involving the Effects of Three

question 63

Multiple Choice

An investigator conducts an experiment involving the effects of three levels of a drug on memory. Subjects are randomly assigned to one of three conditions. A different drug level is administered in each condition. Memory is measured 10 minutes after each subject receives the drug. The following scores are recorded. The higher the score, the better the memory. MS_between = _________.

• A) 48.250
• B) 50.145
• C) 51.254
• D) 45.750

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Definitions:

Test Norms

Standardized values or averages derived from a large sample of individuals' performance on a particular test, used for comparison and evaluation purposes.

Valid

Referring to arguments, data, or conclusions that are logically sound, well-founded, and corresponds accurately to the real world.

Quality

Refers to the standard of something measured against other things of a similar kind; the degree of excellence of something.

Psychological Test

A standardized measure of a sample of a person’s behavior.