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PSYC 3140 Study Guide - Midterm Guide: Dsm-5, Antipsychotic, Disorganized Schizophrenia

Course Code
PSYC 3140
Robert Muller
Study Guide

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Abnormal Psyc: Chapter 11
Chapter 11 – Schizophrenia
Schizophrenia – psychotic disorder characterized by major disturbance in thought, emotion, and
• Disordered thinking in which ideas are not logically related
• Faulty perception and attention
• Flat or inappropriate affect
• Bizarre disturbance in motor activity
Course of schizophrenia
• Schizophrenia sometimes beings in childhood; however, it usually appears in late
adolescence or early adulthood
• Between episodes, they often have less severe but still very debilitating symptoms
• Most people are treated within the community, but hospitalization is sometimes
Clinical symptoms
• Positive symptoms – the presence of too much of a behaviour that is not apparent in
most people
• Disorganized speech – speech is not coherent or linear
• Delusion – beliefs held contrary to reality
• Hallucinations – the most dramatic distortions of perception
Negative symptoms – the absence of a behaviour that should be evident in most people
• Avolition – lack of energy
• Alogia – poverty of speech
• Anhedonia – lack of interest in recreational activity
• Flat effect – a lock of emotional expressiveness
• Asociality – poor social skills, and little interest in being with others
• Catatonia – defined by several motor abnormalities
• Inappropriate affect – emotional response of these individuals are out of context
DSM-5 – heterogeneity of schizophrenia suggested the presence of subtypes of the disorder
• Disorganized schizophrenia – speech is disorganized and difficult for a listener to follow
• Catatonic schizophrenia – clients typically alternate between catatonic immobility and
wild excitement, but one of these symptoms may predominate
• Paranoid schizophrenia – grandiose delusions, delusional jealousy and ideas of
Etiology of Schizophrenia
• Concordance for identical twin (44.3%), fraternal twins (12.08%)
• Endophenotypes – characteristic that reflect actions of genes predisposing individuals to
a disorder, even in the absence of diagnosable pathology
• Molecular genetic – people with schizophrenia have fewer synapse
Dopamine Theory – schizophrenia thought to be related to excess levels of dopamine
• Is not conclusive and leans more towards positive symptoms
Brian structure and functioning
• Enlarged ventricles – implies a loss of subcortical brain cells
• Structural problem – reduction in cortical grey matter in both the temporal and frontal
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