A Researcher Becomes Aware That the Judges He Is Using

question 39

Multiple Choice

A researcher becomes aware that the judges he is using to make observations are becoming more proficient at their task. This improvement among the judges might suggest that __________ represents a potential threat to the internal validity of the study.

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

---

Definitions:

Sensory Neurons

Nerve cells that are responsible for converting external stimuli from the environment into internal electrical impulses for the brain.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for integrating sensory information and responding accordingly.

Autonomic Nervous System

A part of the peripheral nervous system that controls involuntary bodily functions like heartbeat and digestion.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the brainstem down the back, and is encased in the spinal column. It is a crucial part of the central nervous system.