Should I define each and every term while writing an article for a psychology journal? I am writing a review article on dialectical behavioral therapy. If in the article, there are technical terms related to behavioral therapy, so, should I define each of the terms while writing the article or should I assume that the readers/editor/reviewers of the psychology journal know all these terms. For example: A term, cognitove behavioral therapy (CBT). Should I explain what is CBT or should I assume that readers know this type of term.
This question may be better directed to academia.se.
In the first instance, you should check the editorial requirements of the journal you are targeting.  Most journals prescribe that it is mandatory to spell out acronyms with first usage.  It is possible that some very specific technical journals will allow common terminology through without being specific.
Your question is interesting in that you have used the acronym CAB for Cognitive Behavioural Therapy, for which I use the acronym CBT.  I personally associate CAB with Clinical Assessment of Behaviour.  Clearly the acronyms CAB and CBT are not as well established as I had understood.