Explanation

There are several different types of perceptual constancies,

but the two most important ones are size constancy and shape constancy.

Explanation

Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception.

It is a major factor in perceiving the world in three dimensions.

Depth perception happens primarily due to stereopsis and accommodation of the eye. 

Explanation

Perception of the brightness of a color is affected mainly by  the amplitude of light waves 

Explanation

Reticular formation part of the brain sends signals "alert" to the higher centres in response to incoming messages

Explanation

Whereas the functionalist asked what happens when an organism does something; the structuralist asked how and why.

Explanation

 Freud believed that adults’ problems usually Can be traced back to critical stage during childhood 

Explanation

Explanation

Explanation

E.B. Titchener defined ‘Psychology’ as the science of Conscious Experience

Explanation

J.B. Watson, the founder and father of behaviouristic school of psychology,

defined ‘Psychology’ as the science of Behaviour