Questions and Answers
The lifetime prevalence of schizophrenia is around __________ percent. a) 5 b) 1 c) 3 d) 7
Symptoms of schizophrenia have been classified as:
An exaggerated sense of importance, power, knowledge, or identity is known as a:
Sensory experiences in the absence of any relevant stimulation from the environment are called:
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Among those with schizophrenia who suffer from delusions, a large majority experience:
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Which of the following are examples of negative symptoms of schizophrenia?
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James finds it difficult to experience pleasure from activities that he enjoyed before his symptoms began. This is an example of:
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James flails his limbs wildly with excitement. This is most appropriately labeled as:
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Emil Kraepelin and __________ initially formulated the concept of schizophrenia.
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Howard developed elaborate delusions about his ability to communicate with his wife's spirit following a psychotic episode. What DSM-5 diagnosis would fit Howard's case?
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The concordance rate of schizophrenia for fraternal twins is about:
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In regard to studies identifying chromosomal locations of genes involved in schizophrenia, which statement is correct?
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Which of the following suggests that dopamine receptors are mainly related to positive (not negative) symptoms of schizophrenia?
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A consistent brain abnormality found among people with schizophrenia is:
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In people with schizophrenia, the amount of gray matter in the temporal and frontal cortexes is:
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Which of the following have been proposed as likely contributors to the reductions in hippocampal volume observed in people with schizophrenia?
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Study Notes
Schizophrenia Overview
- Lifetime prevalence of schizophrenia is approximately 1%.
- Symptoms classified into three categories: positive, negative, and disorganized.
Types of Symptoms
- Positive Symptoms: Include hallucinations and delusions.
- Negative Symptoms: Examples are flat affect and lack of initiative.
Delusions and Hallucinations
- Grandiose Delusions: Exaggerated sense of importance, power, or identity.
- Hallucinations: Sensory experiences occurring without environmental stimuli.
- Delusions of Persecution: Common among those with delusions related to schizophrenia.
Specific Symptoms and Conditions
- Anhedonia: Inability to experience pleasure from previously enjoyed activities.
- Catatonia: Motor dysregulation, such as flailing limbs.
- Psychotic Episode: Brief psychotic disorder characterized by hallucinations and delusions that resolve within a week.
Genetic and Biological Factors
- Concordance rate for schizophrenia in fraternal twins is around 12%.
- Research indicates varied chromosomal locations involved in schizophrenia, with no firm conclusions drawn.
- Dopamine receptors primarily associated with positive symptoms, as antipsychotic drugs alleviate these symptoms only.
- Enlarged brain ventricles are a consistent abnormality found in individuals with schizophrenia.
- Individuals with schizophrenia display reduced gray matter in the temporal and frontal cortexes.
Contributing Factors
- Reduced hippocampal volume in schizophrenia linked to stress reactivity and disrupted HPA axis.
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Description
Test your knowledge on schizophrenia with these flashcards from Psychology Chapter 9. This quiz includes multiple-choice questions about prevalence rates and symptom classifications. Perfect for students studying abnormal psychology!
