Tracy wants to measure an individual’s brain activities corr…

Tracy wants to measure an individual’s brain activities corresponding to emotional responses to pictures of cats at the moment the pictures are displayed. Although she is interested in the response pattern, she is more concerned about when it happens. What is the best technique for her to use?

A research assistant knows the participant has been assigned…

A research assistant knows the participant has been assigned to the “subliminal images” condition of a study. Instead of following the instructions script exactly, she tells the participant to “watch the screen very, very closely.” The researcher assistant’s unintentional actions could create the _________ effect.