Internal Factors
- Internal and related to the perceiver
- These factors are those factors that are related to an individual and would differ from person to person.
- For example:-
- Motivation
- Learning
- personality
- Experiences
- Expectations
- Culture
- Beliefs
Sensory Threshold
- A sensory threshold is the level of strength a stimulus must reach to be detected.
- For example, a faint sound may not be heard, or a light smell may get unnoticed, etc.
- The minimum amount of strength or intensity that a stimulus should possess to get noticed is referred to as an Absolute threshold.
- It is the lowest intensity at which a stimulus can be detected i.e. in other words, it is the lowest level at which an individual can experience a sensation.

Subliminal Marketing
Marketing with subliminal messages aims to encourage the purchase of the product through subtle effects that are not normally visible to the naked eye.