Personality involves a relative consistency in the way particular individuals respond to their environment, along with their thoughts and emotions. I would say that is very relevant, since we are trying to predict behavior.
Almost all psychologists work in the field, either directly or tangentially.
I searched Google under the key words "personality theory" to get these possible sources:
http://webspace.ship.edu/cgboer/perscontents.html
http://wilderdom.com/personality/personality.html
http://en.wikipedia.org/wiki/Personality#Psychology
http://psychology.about.com/labels.htm?terms=personality%20psychology&SUName=psychology&TopNode=&type=1
Although this might be more information than you wanted, I hope it helps. thanks for asking.
How relevant is personality theory to the field of psychology? What percent of psychologists are currently working in the field of personality psychology?
2 answers
I found on another website that only roughly 20% of pychologists worked specifically in personality psychology? Does this % seem right to you? I thought that was a little small but I might be wrong.