Question 1

People with schizophrenia are MOST likely to have been born in the ________.

Accepted Answer

Multiple studies have found that individuals with schizophrenia are more likely to have been born during the winter months, with the highest risk found in those born in January or February. This may be due to environmental factors, such as maternal infections or vitamin D deficiency during pregnancy.

Question 2

Schizophrenia tends to develop in ________.

Accepted Answer

The answer of Schizophrenia tends to develop in ________.
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Question 3

In regards to brain abnormalities among people with schizophrenia,the most prominent findings involve ________.

Accepted Answer

The most prominent finding among people with schizophrenia is enlargement of brain ventricles. This is believed to be related to a loss of brain tissue, particularly in the frontal lobes and temporal lobes. Atrophy of the caudate nucleus is also commonly seen in schizophrenia but is not as prominent as ventricular enlargement. The other options (enlargement of the frontal lobes and atrophy of the parietal lobes) are not consistently found in schizophrenia cases.

Question 4

The diathesis-stress model of schizophrenia was proposed by ________.

Accepted Answer

The diathesis-stress model of schizophrenia was proposed by Zubin and Spring in 1977.

Question 5

People with schizophrenia show reduced brain activity in the ________.

Accepted Answer

Research has shown that individuals with schizophrenia exhibit reduced brain activity in the prefrontal cortex, which is implicated in decision-making, problem-solving, and working memory, among other cognitive processes. This reduced activity may contribute to the cognitive impairment experienced by individuals with schizophrenia.

Question 6

People with schizophrenia exhibit defects in brain circuitry in the ________.

Accepted Answer

The limbic system, specifically the hippocampus and amygdala, have been shown to have abnormalities in the brains of individuals with schizophrenia. These structures are involved in emotion regulation and memory, which are often affected in those with schizophrenia. The other areas listed are not typically associated with schizophrenia.

Question 7

______ studies of high-risk children (offspring of parents with schizophrenia)support the central tenet of the diathesis-stress model,namely,that heredity interacts with environmental influences in determining vulnerability to schizophrenia.

Accepted Answer

Longitudinal studies involve following a group of individuals over an extended period of time, allowing for the examination of potential causal relationships between factors. In this case, studying high-risk children over time allows for the assessment of how both genetic and environmental factors interact to influence their susceptibility to developing schizophrenia. Experimental studies involve manipulating variables to observe causal effects, observational studies involve observing without manipulation, and correlational studies examine the relationship between variables without necessarily establishing causality.

Question 8

Ventricular enlargement is found in about ________ % of schizophrenic patients.

Accepted Answer

Studies have shown that about 75% of schizophrenic patients have ventricular enlargement, indicating a loss of brain tissue. However, it is important to note that this finding is not unique to schizophrenia and can also be present in other neurological and psychiatric disorders.

Question 9

The idea that schizophrenia results from being raised by a schizophrenogic mother is ________.

Accepted Answer

The idea that schizophrenia results from being raised by a schizophrenogenic mother is not supported by research. Although studies have suggested a link between family environment and the development of schizophrenia, this does not necessarily mean that the mother caused the illness. Other factors such as genetic predisposition and neurobiological abnormalities are also believed to play a role in the development of schizophrenia.

Question 10

Research by the Mednick group found that a major predictor of schizophrenia in high-risk children is ________.

Accepted Answer

The Mednick group found that difficulties or complications during childbirth are a major predictor of schizophrenia in high-risk children.

Question 11

The part of the brain that serves as a sort of mental clipboard for holding information needed to guide organized behaviour and for regulating attention is the ________.

Accepted Answer

The prefrontal cortex is the part of the brain responsible for holding information needed to guide organized behavior and for regulating attention. It serves as a sort of mental clipboard, allowing us to keep relevant information in mind while ignoring distractions. The hippocampus is involved in memory formation and retrieval, the amygdala is responsible for processing emotions, and the reticular formation helps regulate arousal and attention, but none of these specifically serve as a mental clipboard.

Question 12

Evidence for the viral theory of schizophrenia is ________.

Accepted Answer

While there have been some studies suggesting a possible link between viruses and schizophrenia, the evidence is still inconclusive and more research is needed. Therefore, the choice letter B, inconclusive, is the best answer.

Question 13

Research has shown that ________ % of children with two schizophrenic parents develop schizophrenia.

Accepted Answer

Research indicates that approximately 45% of children with two schizophrenic parents are at risk of developing schizophrenia. This high percentage reflects the significant genetic component associated with the disorder.

Question 14

The ________ plays a key role in regulating emotions and higher mental functions,including memory.

Accepted Answer

The limbic system is responsible for regulating emotions, as well as higher mental functions such as memory. The other options listed have different functions - the reticular formation is involved in regulating arousal and attention, the thalamus is involved in sensory processing, and the corpus callosum is responsible for connecting the two hemispheres of the brain.

Question 15

In the old concept of a schizophrenogenic mother,such a mother was described as ________.

Accepted Answer

The old concept of a schizophrenogenic mother described her as being cold, aloof, domineering, and overprotective. This stereotype has been discredited and is no longer considered accurate or helpful in understanding the causes of schizophrenia.

Question 16

Which of the following is NOT one of the three factors that appear to increase or decrease the risk of developing schizophrenia in high-risk children?

Accepted Answer

Emotional maturity factors are not considered to be one of the three factors that increase or decrease the risk of developing schizophrenia in high-risk children. The three factors are vulnerability factors, stressful environmental stimuli or events, and protective factors.

Question 17

Evidence for the cause of schizophrenia points to defects in brain circuitry involving brain regions lying below the cortex,especially the hippocampus and _______,two structures in the limbic system.

Accepted Answer

The limbic system, which is involved in emotion, motivation, and memory, includes the hippocampus and the amygdala. Research on schizophrenia consistently implicates abnormalities in these structures as contributing to the disorder.

Question 18

The model of schizophrenia that proposes that certain people have a genetic predisposition toward schizophrenia that is expressed behaviourally only if they are raised in stressful environments is the ________ model.

Accepted Answer

The diathesis-stress model proposes that individuals have a genetic vulnerability (diathesis) for schizophrenia, but this vulnerability is only expressed if they are exposed to significant environmental stressors. This model emphasizes the interplay between genetic and environmental factors in the development of schizophrenia.

Question 19

Research has shown that ________ % children with one schizophrenic parent develop schizophrenia.

Accepted Answer

Research indicates that 10 to 25% of children with one schizophrenic parent are at risk of developing schizophrenia, reflecting the genetic component of the disorder.

Question 20

Which of the following is a possible diathesis for schizophrenia?

Accepted Answer

A genetic factor is a possible diathesis for schizophrenia. Research shows that individuals with a first-degree relative with schizophrenia have a much higher likelihood of developing the disorder compared to those without a family history. This suggests that genetics likely play a role in the development of schizophrenia. While early childhood experiences, family conflict, and sudden loss of a parent may contribute to the development or exacerbation of symptoms, they are not considered a primary diathesis for schizophrenia.

Quiz 10: Schizophrenia Spectrum and Other Psychotic Disorders