There are six noted types of twelve-step meetings. In "speaker" meetings, one recovering person speaks to the group about his/her addiction and recovery story. In situations where the open or closed meetings are the mainly utilized, group conscience has assigned the gathering as a speaker meeting. Normally speakers are exchanged between gatherings. These speakers share their "experience, quality and expectation" in relating their landing in a calm life and their pledge to looking after restraint.
The answer for this question would be behavioral genetics. This is also mentioned to as behavior genetics. This is a field of scientific investigation that uses hereditary methods or procedures to examine the nature and roots of individual alterations in behavior.