Gender Differences in Autism Spectrum Disorder: A Systematic Review of Diagnosis, Intervention, and Outcomes

Abstract

Autism Spectrum Disorder (ASD) presents distinct diagnostic and treatment challenges, particularly in understanding gender differences in symptom presentation and intervention effectiveness. The male-to-female ASD diagnosis ratio, often cited as 4:1, is increasingly questioned due to the subtler symptom presentation in females, contributing to significant underdiagnosis. This systematic review followed PRISMA guidelines to analyze data from 47 studies, examining gender differences in ASD diagnosis, symptom expression, and intervention effectiveness. Females with ASD more frequently exhibit internalizing symptoms like anxiety, social withdrawal, and emotional regulation difficulties, in contrast to the externalized behaviors typical of males. Analysis of over 1,000 individuals reveals that 75 % of males exhibit hallmark traits like repetitive behaviors and speech delays, compared to only 40 % of females. Conversely, over 60 % of females demonstrate social camouflaging behaviors, masking their symptoms and complicating their diagnosis. Additionally, this research investigates gender differences in response to intervention, finding that while 70 % of males benefit from traditional interventions like Applied Behavior Analysis (ABA) and Cognitive Behavioral Therapy (CBT), only 45 % of females show comparable progress. Females with ASD benefit more from therapies that focus on emotional regulation, social communication, and adaptive behaviors, underscoring the need for gender-sensitive approaches. Based on these findings, the study advocates for the development of diagnostic tools that account for gender-specific ASD traits, urging healthcare professionals to be more vigilant in identifying subtler ASD symptoms in females. Furthermore, intervention programs should be restructured to integrate social and emotional components that address the unique profiles of females with ASD. Families and caregivers must also be educated to recognize these gender-based differences, enabling earlier identification and more personalized care. Addressing these diagnostic and intervention disparities will significantly improve long-term outcomes for females with ASD.