I've been wondering for the last hour why one has 'the' and the other doesn't even though they are constructed in the same manner, 'noun of noun': 'the unity of the individual' and 'population of all ages'??? What do you think makes the difference?
A Primer of Adlerian Psychology offers an accessible, yet very learned, introduction to Adlerian Psychology. Also known as Individual Psychology, the approach stresses the unity of the individual, the subjective choices he or she makes and the goals the individual works towards as he or she moves through life. Therapists can apply this theory in a variety of settings with populations of all ages, making it a highly practical and valuable approach. Written by two scholars with extensive knowledge and experience in this school of thought, this book covers the basic tenets of Individual Psychology geared toward those students and clinicians who are yet unfamiliar with Adler's work.