Which variable does a researcher manipulate when conducting an experiment?

__________ can cause the perception of an odor that is constant and unchanging to disappear.

The __________ perspective is an approach to psychology that emphasizes bodily events and changes associated with actions, feelings, and thoughts.

The __________ theory of dreaming suggests that dreaming is simply a continuation of our daytime thinking.

__________ wanted to understand how specific behaviors and mental processes help a person or animal adapt to the environment, so they looked for the underlying causes and consequences of these behaviors and processes.

Which classic pseudoscientific theory that related bumps on the head to personality traits did not disappear until well into the twentieth century?

The color or hue that we perceive is related to the __________.

A __________ is a substance that alters perception, mood, thinking, or behavior by interacting with the biochemistry of the brain and body.

Neurons speak to one another or in some cases to muscles or glands, in a(n) __________.

On a hike through the hills, Tony feels a bug crawling up his leg under his pants. Which system is necessary for Tony to be aware of the bug?