Controversial paper brands SAD ‘folk psychology’

Seasonal affective disorder (SAD) is a myth and not supported by evidence, argue researchers in a controversial paper.

Despite reclassification in the DSM-5 to “major depression with seasonal pattern as an optional modifier”, the authors say the results from their analysis suggest consideration should be given to discontinuing its inclusion in the guide.

Their cross-sectional study, published in the journal, Clinical Psychological Science, shows no indication that depression is associated with seasonal changes, latitude or sunlight.

“The findings cast serious doubt on major depression with seasonal variation as a legitimate psychiatric disorder,” write the researchers led by Dr Steven LoBello from Auburn University, Alabama.

“The idea that depression occurs along with seasonal changes or worsens in winter appears to be well-entrenched folk theory.”

They say their work adds to the findings of other studies that have used measures consistent with the criteria for major depression.

The authors also note that much of the research that supports the validity of a seasonal modifier in major depression, “is not without significant problems that seriously challenge its validity”.

Major Depression With Seasonal Variation - Is It a Valid Construct?

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