Canadian Psychologists Aim to Raise Awareness of Depression in Individuals with Autism

The Complexity of Autism Spectrum Disorder

Autism Spectrum Disorder (ASD) remains a complex area of study, with ongoing challenges in understanding its nature. The classification of autism as a spectrum complicates efforts to categorize and gather data effectively. According to a 2017 estimate from the World Health Organization, approximately 1 in 160 individuals are diagnosed with ASD. However, the prevalence of depression among those with autism is less well-documented and presents additional challenges.

The Impact of Ignoring Depression in ASD

Neglecting to address depression in individuals with ASD can exacerbate internal struggles and contribute to societal misrepresentation. To explore this issue, researchers conducted a review of data related to ASD and depression in November 2016, culminating in a publication in the *Journal of Abnormal Child Psychology*.

Methodology: Analyzing Previous Studies

The researchers systematically examined five extensive scientific databases, applying specific criteria to ensure the reliability and relevance of the data. Out of 7,857 articles reviewed, 66 met the inclusion criteria for the analysis. They focused on two critical terms: “lifetime prevalence” and “current prevalence” of depressive disorders. Lifetime prevalence refers to individuals who have experienced a unipolar depressive disorder at any point in their lives, while current prevalence pertains to those meeting the criteria at the time of assessment or within the past three months. The studies utilized various diagnostic methods, including clinical diagnoses and self-reports, and included demographic variables such as age, sex, race, and IQ levels.

Findings: Depression Rates in Older Autistic Individuals

The analysis revealed that older individuals with autism and higher IQs exhibited increased rates of lifetime prevalence of depression. It is suggested that those with ASD who can articulate their experiences or better understand their condition may be at a heightened risk for developing depressive disorders. However, the correlation between age and IQ with current prevalence rates was less pronounced. Notably, when individuals reported their symptoms rather than caregivers, the rates of both lifetime and current prevalence were significantly higher.

Addressing the Issue Through Further Research

These findings highlight a significant, yet often overlooked, issue within the ASD population, warranting more extensive research. The researchers acknowledged several strengths of their study, including a comprehensive literature review and a methodical data screening process. Additionally, the global nature of the selected studies contributed to a diverse dataset. While the small sample size in this meta-analysis could be seen as a limitation, it does not undermine the importance of these findings.

The Need for Preventative Care Across Age Groups

The researchers believe their analysis is the first of its kind and hope it will inform healthcare providers about the necessity for targeted preventative care across different age groups within the ASD population. This includes follow-up care for individuals currently diagnosed with depressive disorders. To demystify ASD and its associated challenges, continued research building on past studies is essential.

References

Chandrasekhar, T., and Sikich, L. (2015). Challenges in the diagnosis and treatment of depression in autism spectrum disorders across the lifespan. *Dialogues in Clinical Neuroscience, 17*(2), 219-227.

Hudson, C.C., Hall, L., Harkness, K.L. (2018). Prevalence of Depressive Disorders in Individuals with Autism Spectrum Disorder: a Meta-Analysis. *Journal of Abnormal Child Psychology*. https://doi.org/10.1007/s10802-018-0402-1