The PLISSIT model is a system applied in the field of sexual therapy. The purpose of PLISSIT model is to determine different measures of intervention for people.

Gender, sexuality and psychotic orders.
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Describe the “PLISSIT” model of sex therapy
The PLISSIT model is a system applied in the field of sexual therapy. The purpose of PLISSIT model is to determine different measures of intervention for people. Sexual therapy is a procedure for the treatment of sexual dysfunction. Sexual disorder, sexual dysfunction, is experienced by an individual during the stage of original time for sexual intercourse (Konzen, Lambert, Miller & Negash, 2018). Moreover, sexual dysfunction is grouped into four classes; desire disorders, arousal disorders, pain disorders and orgasm disorders. According to the notes, sexual desire disorder is the absence of sexual fantasies resulting to a desire for sexual morale. Sexual arousal disorder refers to the persistent inability of a female to achieve enough lubrication response during the intimate time for sex. Continuous feelings of pain evidence sexual pain disorder during coitus. However, the pain can generate from genital stimulation. Lastly, sexual orgasm disorder occurs when a woman is unable to reach orgasm (sexual climax).
The line between normal and abnormal sexual behavior and criteria to use
Sexual behavior is a focus of people’s thoughts and public discussion. The general practice and private views are close on this subject because mind plays together. In fact, it is normal to have sexual feelings and need to express those feelings, but that should be in a private place (Nevid, Rathus, & Greene, 2014). Abnormal sexual behavior occurs when someone reveals their sexual morale to the public areas. For instance, a man emerges out from nowhere towards the corridors of a mall, pants down and start masturbating. According to the author, this seems weird and abnormal. The medical term for this condition is a paraphilia, which is an abnormal behavior of sexual behavior. Referring to Nevid, Rathus and Green excerpt, there are specific sexual behaviors that are acceptable to the society, but what determines the normal behavior from the abnormal behavior is the way people think about sex. People may think sex is dangerous to oneself and others.
Sex hormones could also be one reason behind the abnormal sexual behavior of individuals with sexual perversion. In animal tests, the animals show different sexual behaviors when castrated or injected with sex hormones. Once sterilized, the animals show no sexual behavior; they expose new sexual behavior with a rise in sex hormones in their blood. For people, it has been rumored that they are less tormented by sex hormones than animals. Several studies have rumored that a rise in sex hormones will influence one’s sexual motivation or behavior. Other reviews, in distinction, view that sexual behavior is influenced by cultural norms or experiences (Konzen, Lambert, Miller & Negash, 2018).

From the attitude of analysis, one could develop wrong or abnormal sexual behaviors if psychological satisfaction, that ought to be created at every stage of reproductive growth. Sexual behaviors are typically found in people that square measure obsessed with a way of inferiority or have a timid and introversive personality, especially among those that, during their childhood, were tutored to repress their desire.

Perverse sexual behaviors could also be caused by physiological and temperamental factors however even by the physical and psychological atmosphere that one faces within the method of growth. In alternative words, one could witness and mimic abnormal sexual behaviors seen during a style of obscene media, derive sexual excitement throughout the amount, and repeat those actions, and this will be one reason of perversion. Thus, behaviorists treat individuals with paraphilia supported a scientific decrement methodology, that is, by numbing their acute reactions to certain sorts of stimulation.
According to Nevid, Rathus, and Greene, human beings are so diverse that it is hard to differentiate which sexual behaviors are normal and abnormal. The criteria needed to determine abnormal sexual behavior differ significantly either by social or cultural standards devised by researchers “The Diagnostic and Statistical Manual of Mental Disorders” (Ghanizadeh, 2013).
Difference between gender identity disorder and a gay male or lesbian sexual orientation
The gender identity disorder is outlined as a disorder within which a person exhibits marked and permanent identification with the other sex. At this stage, the other sex experience prolonged discomfort (dysphoria) with their sex or sense of inappropriateness within the role of that sex (Dr. Phil Show on gender identity disorder – Does reparative therapy fit? 2018). The characteristics could also be manifested in statements like want to be the opposite sex. Furthermore, dressing and absorbing the roles of the opposite sex, participating preferentially in activities sometimes enjoyed by the opposite sex. They express dislike for the functions and activities of their gender, yet as a dislike for own genitals and alternative physical characteristics of their sex.
The term sexual orientation refers to the gender that an individual is attracted to. The gay and lesbian include those who are romantically and physically interested in individuals of the same sex: a woman is interested in another woman; man is interested in another man. Homosexuals (whether male or female) is usually referred to as “gay.” Gay women are related to a lesbian.

Describe the diathesis-stress model
The diathesis-stress model is a mental model that endeavors to describe why people cause psychological problems. The fundamental assumption is that mental issues are generated by the interaction between genetics and life experience (McKeever & Huff, 2003).
Define schizophrenia and its diagnosis
Schizophrenia is a mental discomfort which appears in the late adolescence. The mental disorder is characterized by hallucinations and cognitive complications which have long-lasting struggles if not controlled. Therefore, to be diagnosed with schizophrenia, an individual should express specific symptoms such as delusions, catatonic behavior, and hallucinations.
Distinguishing schizophrenia from other disorders within the schizophrenic spectrum
Apart from other disorders, schizophrenia consists of a spectrum of psychotic discomforts. The psychotic disorders are such as schizoaffective disorder, catatonia, and delusional distress.
Evidence that supports a genetic component and its strength to the development of schizophrenia
Twin studies can evidence the genetic component to the development of schizophrenia. Monozygotic (identical) twins are released to the environment while dizygotic (fraternal) twins are attributed to hereditary and environmental factors. The concordance rate that a second twin develop a disorder if the first examined twin has the disorder. Heritability is the composition of the variance described by genetic factors. The concordance proportions of schizophrenia for identical twins have been noted to be approximately 40% to 50%, and heritability evaluation is around 80% (Konzen, Lambert, Miller & Negash, 2018). Potential other factors for schizophrenia can be classified into three domains: foetal factor and early biological exposure.
A risk factor an argument for or against a genetic component
Recent studies prove that schizophrenia can result in part of a specific gene that is important in making brain chemicals disorders. The advertisement shows that with a saliva specimen, an organization can determine if the person is at risk for growing specific diseases such as schizophrenia. Therefore, it becomes difficult for genome scans to provide a clear picture of a person’s risk developing a mental malfunction (Ghanizadeh, 2013).
Besides, it likely takes more than genes to cause the mental discomfort. Researchers think that union of genes and environment are essential for schizophrenia to undergo. Environmental components might be included, for example, exposure to infections or malfunction health before birth, issues amid birth, and other known psychosocial factors
Schizophrenia affects both male and females equally. The disorder takes part at the same rates in all ethnic communities. Symptoms such as delusions and hallucination appear between ages of 16 and 30. Mostly, men undergo the signs earlier than women. At the age 45, people do not acquire schizophrenia. Therefore, a father who is at the age of 50, it is rare to get infected by the disorder. The disorder rarely affects children. It can be hard to diagnose schizophrenia in children because the first symptom can include change of friends and irritability
The factors can explain schizophrenia in up to 80 percent of teenagers who are prone to the risk of developing the infection. The factors include separating oneself and retreating from others. In addition, there is a continuous increase in rare thoughts and suspicious, and history of psychosis. As a result, young people who show the disease at this stage is referred to as prodromal.

References
Nevid, J., Rathus, S. & Greene, B. (2014). Abnormal Psychology in a Changing World, 10th ed. Pearson: Upper Saddle River, NJ.
Konzen, J., Lambert, J., Miller, M., & Negash, S. (2018). The Eis Model: A Pilot Investigation Of A Multidisciplinary Sex Therapy Treatment. Journal Of Sex & Marital Therapy, 00- 00. http://dx.doi.org/10.1080/0092623x.2018.1436626
Ghanizadeh, A. (2013). Agreement between Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, and the proposed DSM-V attention deficit hyperactivity disorder diagnostic criteria: an exploratory study. Comprehensive Psychiatry, 54(1), 7-10. http://dx.doi.org/10.1016/j.comppsych.2012.06.001
How Is Schizophrenia Treated? | Howcast. (2018). Howcast. Retrieved 10 February 2018, from https://www.howcast.com/videos/498594-how-is-schizophrenia-treated-mood-disorders/
Dr. Phil Show on gender identity disorder – Does reparative therapy fit? (2018). YouTube.
Nevid_10e_CH10_Lecture_PPT[1].pptx. (2018).
McKeever, V., & Huff, M. (2003). A diathesis-stress model of posttraumatic stress disorder: Ecological, biological, and residual stress pathways. Review Of General Psychology, 7(3), 237-250. http://dx.doi.org/10.1037/1089-2680.7.3.237
The United States. Center for Studies of Schizophrenia (U.S.), National Clearinghouse for Mental Health Information (U.S.), National Institute of Mental Health (U.S.), & National Institute of Mental Health (U.S.). (1968). Schizophrenia bulletin. Rockville, Md.: U.S. Dept. of Health, Education and Welfare, Public Health Service, Alcohol, Drug Abuse and Mental Health Administration.