The Presence of a Control Group Enables Researchers to Evaluate

question 41

Multiple Choice

The presence of a control group enables researchers to evaluate threats to internal validity. However, one threat that is most likely to still influence results to an unknown degree, even when a control group is used, is

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

---

Definitions:

Heroin

An opioid drug made from morphine, a natural substance taken from the seed pod of various opium poppy plants, highly addictive and illegal.

Antibiotics

Drugs used to fight bacterial infections by either killing bacteria or inhibiting their growth, a fundamental component of modern medicine.

Childhood Asthma

A respiratory condition characterized by chronic inflammation of the airways in the lungs, often leading to difficulty breathing, which commonly develops in children.

Masculinization

The process of developing male physical characteristics or role behaviors, typically influenced by hormonal or genetic factors.