1. What is the science of psychology?
Psychology is the scientific study of behavior and mental processes. It encompasses not
just what people do but also their thoughts, emotions, perceptions, reasoning processes,
memories, and even the bio
1. Why do psychologists study the brain and nervous system?
The brain controls our behavior through every waking and sleeping movement. Our movements,
thoughts, hopes, aspirations, dreams-our very awareness that we are human-all de
1. What are the different states of consciousness?
In waking consciousness, we are awake and fully aware of our thoughts,
emotions, and perceptions. All other states of consciousness are considered
altered states of consciousness, a
1. What is sensation, and how do psychologists study it?
Sensation is our first encounter with a raw sensory stimulus, whereas perception is the process by
which the brain interprets, analyzes, and integrates that stimulus with oth
1. What is learning?
Learning is a relatively permanent change in behavior that is brought about by
experience. From the beginning of life, humans are primed for learning. Infants
exhibit a primitive type of learning called habituat