Genetic Factors in Schizophrenia

What is one biological explanation for schizophrenia?

• Environmental factors

• Genetic factors

• Dietary habits

• Lifestyle choices

Which type of study shows a general trend in the development of schizophrenia among individuals with close family members who have the disorder?

• Case studies

• Family studies

• Longitudinal studies

• Cross-sectional studies

According to the genetic explanation, what is passed on to offspring that may cause schizophrenia to develop?

• Environmental influences

• Genes or particular combinations of genes

• Dietary preferences

• Social behaviours

What percentage of the general population is likely to develop schizophrenia, according to Gottesman (1991)?

• 5%

• 10%

• 1%

• 20%

What is the likelihood of developing schizophrenia if you have an identical twin with the disorder, as found by Gottesman (1991)?

• 25%

• 48%

• 60%

• 75%

Which type of study is particularly useful for studying the role of genetics in schizophrenia?

• Survey studies

• Twin studies

• Experimental studies

• Observational studies

What does the increased likelihood of developing schizophrenia among close family members suggest?

• Schizophrenia is entirely environmental

• Schizophrenia is at least partly caused by genetics

• Schizophrenia is a result of poor lifestyle choices

• Schizophrenia is a myth

Which of the following is NOT a method used to investigate the genetic explanation for schizophrenia?

• Family studies

• Twin studies

• Adoption studies

• Clinical trials

What is the primary focus of adoption studies in the context of schizophrenia?

• To examine the impact of diet on schizophrenia

• To assess the influence of genetics versus environment

• To study the effects of medication

• To evaluate the role of social interactions

Which of the following statements is true regarding the genetic explanation of schizophrenia?

• It is solely based on environmental factors

• It suggests a combination of genes may cause the disorder

• It disregards any genetic influence

• It is based on dietary habits