Indicators of Abnormal Behaviors and Thoughts
This section outlines the key indicators used to identify abnormal behaviors and thoughts in clinical psychology. The five indicators of abnormal behaviors and thoughts in clinical psychology are statistically rare occurrences, distress, maladaptive behaviors, irrational actions, and persistence over time.
The Diagnostic and Statistical Manual 5th edition DSM−5 establishes criteria for diagnosing mental disorders based on the number and duration of symptoms. While diagnostic labeling provides a universal language for mental health professionals, it can lead to overfitting individuals to diagnoses.
Highlight: The Rosenhan study demonstrated how diagnostic labels can influence perception, with 7 out of 8 healthy research participants being misdiagnosed with schizophrenia when admitted to psychiatric hospitals.
The section also introduces schizophrenia spectrum disorders, characterized by a disconnection from reality. Symptoms include delusions, hallucinations, and paranoid thoughts. The dopamine hypothesis of schizophrenia suggests that overactive dopamine receptors in the prefrontal cortex and sensory regions contribute to the disorder.
Vocabulary: Concordance rates refer to the probability that related individuals will develop a genetically heritable disorder.
Antipsychotic drugs, which act as dopamine antagonists, are used to control delusional thinking and hallucinations in schizophrenia. The section concludes by introducing neurodevelopmental disorders, which manifest during early childhood and are characterized by developmental deficits or delays.