The conditions that a researcher wishes to prevent from affecting the outcome of the experiment are the

Which thought reflects the type of thinking that rational-emotive therapy seeks to change?

a) "Snakes can bite." b) "What is the point of life?" c) "I must stay on the Dean's list." d) "I just don't associate with that kind of person."

What is the defining characteristic of a "true" experiment?

A) use of at least one variable B) direct control over extraneous variables C) direct manipulation of the IV D) use of two equal groups