Kayleigh Was Enlisted to Be a Part of a Physiological

Multiple Choice

Kayleigh was enlisted to be a part of a physiological study for extra credit in her experimental psychology course. She read the informed consent and knew she would be observed as she competed against other participants in various physical challenges. Kayleigh became very nervous and began to doubt her athletic ability, knowing someone was watching her. This is an example of:

A) perception.
B) bias.
C) ecological validity.
D) reactivity.