, PYC3712 Assignment 1 Semester 1 2026 – DUE 2026
Question 1 [15]
Classification of Simonny’s abnormal behaviour according to the DSM-
5-TR and justification
Introduction
According to the Diagnostic and Statistical Manual of Mental Disorders,
Fifth Edition, Text Revision (DSM-5-TR), personality disorders are
characterised by enduring patterns of inner experience and behaviour
that deviate markedly from cultural expectations, are pervasive and
inflexible, have an onset in early adulthood, are stable over time, and
lead to distress or impairment in functioning (American Psychiatric
Association [APA], 2022). Based on the information provided in the case
study, Simonny’s abnormal behaviour is most appropriately classified as
Schizoid Personality Disorder (SPD).
Schizoid Personality Disorder falls under Cluster A personality
disorders, which are characterised by odd, eccentric, and socially
withdrawn behaviour. Simonny’s persistent social detachment,
emotional coldness, limited interpersonal relationships, and preference
for solitary activities strongly align with the DSM-5-TR diagnostic
criteria for SPD.
DSM-5-TR Diagnostic Criteria for Schizoid Personality Disorder and
Application to the Case
The DSM-5-TR outlines that a diagnosis of Schizoid Personality Disorder
requires a pervasive pattern of detachment from social relationships
Question 1 [15]
Classification of Simonny’s abnormal behaviour according to the DSM-
5-TR and justification
Introduction
According to the Diagnostic and Statistical Manual of Mental Disorders,
Fifth Edition, Text Revision (DSM-5-TR), personality disorders are
characterised by enduring patterns of inner experience and behaviour
that deviate markedly from cultural expectations, are pervasive and
inflexible, have an onset in early adulthood, are stable over time, and
lead to distress or impairment in functioning (American Psychiatric
Association [APA], 2022). Based on the information provided in the case
study, Simonny’s abnormal behaviour is most appropriately classified as
Schizoid Personality Disorder (SPD).
Schizoid Personality Disorder falls under Cluster A personality
disorders, which are characterised by odd, eccentric, and socially
withdrawn behaviour. Simonny’s persistent social detachment,
emotional coldness, limited interpersonal relationships, and preference
for solitary activities strongly align with the DSM-5-TR diagnostic
criteria for SPD.
DSM-5-TR Diagnostic Criteria for Schizoid Personality Disorder and
Application to the Case
The DSM-5-TR outlines that a diagnosis of Schizoid Personality Disorder
requires a pervasive pattern of detachment from social relationships
