Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Get quick and reliable solutions to your questions from a community of seasoned experts on our user-friendly platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

A researcher wants to find out if rats are better at completing a maze more quickly when their trainers are told that they are "maze-bright" rats vs. Those who are told that they are "maze-dull" rats. Whether the trainer is told the rat is "maze-bright" or "maze-dull" is which type of variable?
O Extraneous variable
O Independent variable
O Dependent variable
O Confounding variable