Part one of term paper
is a mental disorder marked by the loss of contact with reality. When a person's thinking, feeling, and behavior is abnormal, it interferes with his or her ability to function in everyday life. Delusions, hallucinations, and irregular thinking and emotions are produced. If these signs are present, he or she may have the mental illness calle ...

Part two of term paper
... are focusing on four leading theories: the Genetic Theory, the Environmental Theory, the Biochemical Theory, and the Bio-Psycho-Social Theory. The Genetic Theory argues that is caused by traits in a person's genetic makeup. A normal person has twenty-three pairs of chromosomes. Each pair contains one chromosome from each parent. In corresponding locations called loci of each chromosome, the genes for specific traits are located. Some researchers believe that mutations with these genes can cau ...