What do you do when you’re hungry? You eat! This concept is not rocket science; however, scientists have taken decades to find an exact explanation for why we, as humans, feel hungry. People eat out on dates, on holidays, and simply to feel closer to one another. There are multi-million dollar businesses founded on the impetus of eating. Something this important to the human experience must be studied, and this explanation will help you digest information regarding the definition of hunger motivation, the psychological theories, and the role biological mechanisms play in hunger.
- What is hunger motivation?
- What is hunger motivation theory?
- How is hunger motivation caused?
Hunger Motivation in Psychology
Before understanding the many theories and explanations regarding the motivation behind hunger, we must empirically define and operationalize the relevant terminology.
Fg. 1 Eating, pexels.com.
Definition of Hunger Motivation
Hunger itself can have multiple scientific definitions depending on how a study intends to measure and observe the presence of hunger.
The medical dictionary provides a basic definition explaining that hunger is simply the desire or need to consume food.
Motivation is defined by the American Psychological Association (2007) as the force that gives direction and purpose to an individual's behavior regardless of their own awareness.
The topic of motivation is a widely researched concept with several valid theories. Hunger and motivation are some of the most crucial correlational factors within these studies and provide both biological and psychological perspectives.
Hunger Motivation Theory
There is no one explanation or theory for motivation and hunger. Many early psychologists and scientific studies suggest that hunger motivation is solely a biological and physiological process. However, since these theories were founded, there have been many contradictory factors involving the motivations behind hunger.
Many ideas surrounding the late hunger motivation theory beg the question - is hunger an internal or external motivation?
A case for both explanations can be made. Some theories of motivation support hunger as a biological occurrence which would be an example of internal motivation.
One hunger motivation example supporting the biological perspective is the local theory of hunger and stomach contraction theory (Cannon & Washburn 1995). This theory is founded on the idea that hunger comes from the biological process of stomach contractions that signal to the brain when we are hungry.
Psychologist Al Washburn tested his stomach contraction theory by inflating a balloon-type material in his stomach. When the balloon had become fully inflated, he reported this diminished his feeling of hunger (Hara 1997). This proved his theory that internal motivation uses biological signals of hunger by stomach contractions.
Causes of Hunger Motivation
Early biological explanations for the motivation of hunger also included drops in glucose levels or even a decrease in fatty acids resulting in hunger signals. Over time, these theories have been proven insufficient as the main motivators of hunger.
While they make sense in terms of the biological and primary physiological needs of humans, they cannot account for several other external motivators behind feeling hungry.
External Causes of Hunger Motivation and Examples
A few of the main causes of hunger motivation include external factors. These are akin to psychological theories of hunger.
Often, people find themselves eating even when they are not hungry. This is precisely what contradicts the previously mentioned biological drive theories. If the only motivator to eat is to reduce feelings of hunger, then why do so many admit to eating despite the lack of hunger?
Incentive and Arousal Theories
General theories that may account for the external motivation of hunger are incentive and arousal.
Incentive theory (1940) states that motivation can stem from external stimuli that provide reinforcement for behavior. When applying this theory to hunger motivation the act of eating must be reinforced by some sort of external motivator or stimulus as an incentive to continue the behavior.
One example of hunger motivation based on incentive theory can be seen in bodybuilders. Usually, people who want to maintain or gain weight will eat in a calorie surplus. The motivator in this situation is the external desire to achieve a certain physique or weight goal. This reinforcer causes the individual to increase the behavior of eating thus supporting the incentive-based theory.
Arousal theory (1908) was founded on the idea that motivation comes from the desire to reach a level of Sensation. Of course, this would make sense in the motivation for hunger due to our natural willingness to satiate taste receptors.
Think about how good it feels to indulge in a big slice of chocolate cake, a juicy steak, or a bag of salty fries. You may enjoy eating these not just because you are hungry, but because it is pleasurable.
It is no secret that eating can produce feelings of pleasure and there is an abundance of psychological studies to support this. One study explores the brain’s pleasure cycle in relation to eating and concludes that the cycle “links pleasure with the cyclical changes in hunger levels related to the initiation and termination of meals” (Kringelbach, 2015).
Studies like this support the external motivation of hunger as well as the implications behind theories of the biological processes of hunger motivation.
Hunger Motivation - Key takeaways
- Hunger is the desire or the need to consume food.
- Motivation is the force that gives direction and purpose to the behavior of an individual.
- Hunger motivation is not solely a biological and physiological process.
- Internal biological theories cannot account for several other external motivators.
- General theories that may account for external motivation of hunger are incentive theory and arousal theory.
- Incentive theory states the act of eating must be reinforced by some sort of external motivator.
- Arousal theory supports the idea that motivation comes from the desire to reach a level of Sensation.
Explanations 
Textbooks 
Exams 
Magazine 
