Bill Conducted an Experiment to Determine the Effectiveness of a Drug

question 77

Multiple Choice

Bill conducted an experiment to determine the effectiveness of a drug prevention program in high school.This group was compared to students at another high school that did not take part in the program.The students were given an exam before and after taking part in the program.As the students completed the posttest,many realized that it was the same test they took before the program and put in random answers,as teenagers would.This is a case of what invalidity problem?

• A)history
• B)maturation
• C)instrumentation
• D)testing
• E)mortality

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Definitions:

Hernia

A hernia is a condition where an organ or tissue protrudes through the wall of the cavity containing it, often causing pain and discomfort.

Spermaturia

Presence of sperm in the urine.

Prostatomegaly

The enlargement of the prostate gland, which may cause urinary tract obstruction.

Human Papillomavirus (HPV)

A group of viruses that can cause warts and are often associated with cervical and other types of cancer.