After an accident, Stella is left with brain damage. Now Stella has trouble judging the emotions of others, even when she can see their facial expressions. Stella has most likely damaged her ____

Fixation is a very effective defense mechanism that helps us stay focused on a task until it has been completed or resolved

Indicate whether this statement is true or false.

To guard against order effects, researchers use

a. matched random assignment b. carry-over effects c. counterbalancing d. experimental control e. larger samples