ASSIGNMENT 1 SEMESTER 1 2026
UNIQUE NO.
DUE DATE: 2026
, Abnormal Behaviour and Mental Health - PYC3712
Assignment 01 – Semester 1 (2026)
Question 1
Classification of Simonny’s abnormal behaviour according to the DSM-5-TR
Diagnosis: Schizoid Personality Disorder (SPD)
Based on the information provided in the case study, Simonny’s behaviour is most
consistent with Schizoid Personality Disorder, classified under Personality
Disorders (Cluster A) in the DSM-5-TR (American Psychiatric Association [APA],
2022).
Schizoid Personality Disorder is characterised by a pervasive pattern of detachment
from social relationships and a restricted range of emotional expression in
interpersonal contexts, beginning by early adulthood and present across multiple
situations (APA, 2022).
Simonny meets several core DSM-5-TR diagnostic criteria for Schizoid Personality
Disorder, as discussed below.
Persistent detachment from social relationships
Simonny displays a clear and enduring pattern of social isolation. He lives alone in a
remote shack with no neighbours and avoids social interaction as much as possible. He
has no friends, avoids social activities, and only communicates minimally with his
parents. This behaviour reflects the DSM-5-TR criterion of neither desiring nor
enjoying close relationships, including family relationships.
Preference for solitary activities
The case study highlights that Simonny spends most of his time alone engaging in
farming and gardening activities. He derives pleasure from these solitary pursuits and