Which Threat to Internal Validity Is Largely Overcome by Using

question 16

Multiple Choice

Which threat to internal validity is largely overcome by using random assignment of participants to experimental and control groups?

• A) History
• B) Maturation
• C) Selection
• D) Instrumentation
• E) Mortality

---

Definitions:

Concerns

Matters of interest or importance to someone.

Catatonic Schizophrenia

A subtype of schizophrenia characterized by extremes of behavior, including motor immobility, excessive motor activity, and echo of speech or movement.

Somatoform

A category of mental disorders characterized by physical symptoms that suggest illness or injury, but cannot be fully explained by a medical condition.

Physician

A professional who practices medicine, which involves promoting, maintaining or restoring health through the study, diagnosis, prognosis, and treatment of disease, injury, and other physical and mental impairments.