A scientific method that seeks to confirm cause and effect relationships by introducing independent variables and observing their effects on dependent variables.

Population is divided into subgroups and random sampling techniques are then used to select members from each subgroup

What will be an ideal response?

An individual with a diagnosed personality disorder is emotionally unstable, impulsive, and reckless. This person's diagnosis is likely to be which of the following personality disorders?

A) borderline B) schizotypal C) obsessive-compulsive D) avoidant