Relationship Approach Testing is also called Sexuality or Compatibility Testing. These traits are formed between the ages from 8-14 and are brought out by your secondary caretaker, which is usually the father. Relationship approach testing helps determine how you approach relationships with potential mates. This is not only extremely helpful when working with relationship issues, but helpful in understanding how you approach relationships. This also has some basis from Erickson's stages of development but was created and widely popularized by Dr. John Kappas in his work in Hypnotherpy covering over 40 years