PSYC 273 Study Guide - Final Guide: Twin Study, Frontal Lobe, Tardive Dyskinesia
Chapter 12- Schizophrenia
• Positive symptoms
o Delusions, hallucinations
• Negative symptoms
o Decreased motivation, social isolation
• Twin studies
o In identical twins, if one has it the other one likely does too
o In fraternal, less of a chance
• Age of father
o Older father increases chances
• Specific gene
• Environmental factors
o More likely if born in winter months (maternal stress)
o More likely if living in urban environment (higher stress)
• Ventricles and frontal lobe activity
o Enlarged ventricles
o Decreased (?) frontal lobe activity
• Dopamine and glutamate
o Increased dopamine
o Reduced glutamate is associated with schizophrenia
• Tardive dyskinesia
o Involuntary movement of the face and jaw
• Neuroleptics/antipsychotics
o Classic
▪ Decrease dopamine
o Atypical
▪ Increase glutamate
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