Psychologists have proposed a number of theories about the origins and function of emotions. The theorists behind the dissenting views do agree on one thing, however: emotion has a biological basis. This is evidenced by the fact that the amygdala (part of the limbic system of the brain), which plays a large role in emotion, is activated before any direct involvement of the cerebral cortex (where memory, awareness, and conscious "thinking" take place).
In the history of emotion theory, four major explanations for the complex mental and physical experiences that we call "feelings" have been put forward. They are: the James-Lange theory in the 1920s, the Cannon-Bard theory in the 1930s, the Schacter-Singer theory in the 1960s, and most recently the Lazarus theory, developed in the 1980s and '90s.
The James-Lange Theory
The James-Lange theory proposes that an event or stimulus causes physiological arousal without any interpretation or conscious thought, and you experience the resulting emotion only after you interpret the physical response.
You're late leaving work, and as you head across the parking lot to your car, you hear footsteps behind you in the dark. Your heart pounds and your hands start to shake. You interpret these physical responses as fear.
The Cannon-Bard Theory
The Cannon-Bard theory, on the other hand, suggests that the given stimulus evokes both a physiological and an emotional response simultaneously, and that neither one causes the other.
You're home alone and hear creaking in the hallway outside your room. You begin to tremble and sweat, and you feel afraid.
The Schacter-Singer Theory
The Schachter-Singer theory takes a more cognitive approach to the issue. Schacter and Singer believe that an event causes physiological arousal, but that you must then identify a reason for the arousal before you label the emotion.
You're taking the last bus of the night, and you're the only passenger. A single man gets on and sits in the row behind you. When your stop comes around, he also gets off the bus. He's walking behind you. You feel tingles down your spine with a rush of adrenaline. You know that there have been several muggings in your city over the past few weeks, so you feel afraid.
The Lazarus Theory
The Lazarus theory builds on the Schacter-Singer theory, taking it to another level. It proposes that when an event occurs, a cognitive appraisal is made (either consciously or subconsciously), and based on the result of that appraisal, an emotion and physiological response follow.
You're buying a few last-minute items at the gas station, when two young men in hooded sweatshirts enter the store in a hurry, with their hands in their jacket pockets. You think perhaps they're here to rob the place, so you get scared, and your feel like you might throw up.
While each of these theories is based on research, there is no absolute proof as yet of how emotions arise in our bodies and minds, or what determines our own individual experiences of them. What we do know is that feelings are a powerful force to be reckoned with, and should never be belittled.
Paul Perry from Los Angeles on April 29, 2013:
One thing is for sure, we feel emotion and it is a huge part of our lives. IT colors everything we do and think. Thanks for this great hub very interesting and informative!
Mat on April 17, 2013:
Agreed with Grafito... what's yours source?
srilanka on October 19, 2012:
very good information
Nancy Owens from USA on December 21, 2011:
Thank you for the information. I enjoy learning about the mind/body connections. Our emotions play a big role in this area
popoola oyewole mathew psychology student Ekiti state university (ado ekiti.) firstname.lastname@example.org on December 08, 2011:
interesting, compresed but educative and comprehensive article.
Fagbamila Abidemi Nathaniel on December 08, 2011:
A good job well done by the compiler but you can do better if u give examples and give individual process of each of the theory but for this thank you...
laraib on December 03, 2011:
malika on November 17, 2011:
its very interesting
zelda on September 23, 2011:
this is amazing
MARLON CASTUERA DE CASTRO on September 21, 2011:
THANKS 4 DIZ BRIEF YET INFORMATIVE QUESTION ,, IT REALLY HELPS ME ,A LOT,
alvin on September 05, 2011:
thank you for giving us the definition of this theories...
i really appreciate your effort..
diana on August 22, 2011:
its good to know these theories
Grafito on April 22, 2011:
Just a quick question...
You mentioned that the amygdala kicks in before the cortex, and that is the reason why most theorists agree on a biological basis. However the canon-bard and lazarus theories don't fit this at all.
could you possibly give me a reference for the information you have in the opening paragraph?
Adam9000 on June 30, 2010:
Wow this is really interesting.
smitha on April 02, 2010:
Excellent explanation,especially for budding psychologists
kim on March 21, 2010:
Very well presented and organized. I like how you briefly and clearly explained the theory, then provided examples of each theory.
Sage Williams on February 16, 2010:
Dynamic Hub, very informative and well written. Very interesting love your examples. The examples really helped to simplify the terms and made it easier to understand.
Ariel on February 08, 2010:
this is a great article an it really helped me write my paper. THANK YOU!
pam4187 from Sussex County, NJ on December 03, 2009:
Laurel Rogers from Bishop, Ca on November 25, 2009:
I'm glad that I popped in to the 'emotions' group, finding this Hub. Excellent assessment of these theories, Maggie; my sense is that the Lazarus typology fits best...at least for me.
wendy lou on July 14, 2009:
yogeshsingh from Delhi on February 28, 2009:
Thanks Maddie. It is very helpful.
DNKStore from Mississippi USA on August 21, 2008:
My personal experience would suggest that emotions arise based on the value assigned to certain 'triggers', which are of course, based on personal experiences, and what those experiences meant to us.
That would fit into the Lazarus theory.
Thanks for a great Hub!
Marcus Freudenman from Sunshine Coast Australia on February 15, 2008:
Very well presented. I've been pondering about emotions for a long time and appreciate your efforts.
Kylyssa Shay on January 04, 2008:
Outstanding article! I love the way you condense the essence of each theory into perfect bite-sized pieces.
Small Business on November 19, 2007:
Very good information. Where does intuition play in all of this.
Barry Rutherford from Queensland Australia on September 14, 2007:
another great blog on subjects i love..