You Have Been Trying to Encourage a Classmate to Enroll

You have been trying to encourage a classmate to enroll in the marriage and family course you are presently taking. Your friend states that he does not need to learn about families because he knows all he needs to know from his own "experience." Present an argument against personal experience as a means to adequately understand marriage and families. Describe what it means to study families based on scientific investigation and briefly describe a variety of techniques used in scientific investigations.