A fascinating study conducted by Northwestern University reveals mathematical evidence supporting the long-held belief that clothing trends cycle every 20 years. This concept resonates with many, as we’ve all noticed styles like miniskirts and bell-bottom jeans making their comeback.
Lead author Dr. Emma Zajdera, an applied mathematician at Princeton University, stated, “We’ve all experienced the idea that fashion is coming back…” in BBC Science Focus.
Dr. Zajdera elaborates, “As mathematicians, we aimed to validate or refute this theory. Thanks to recent advancements in computer tools and digitized records, we could achieve this.” This groundbreaking research involved a multidisciplinary team, including mathematicians, computer scientists, engineers, and art historians, who compiled an extensive database of approximately 37,000 images of women’s clothing spanning 150 years.
The dataset included historical sewing patterns from 1869 to 2015, alongside Vogue runway images from 1988 to 2023. These resources enabled researchers to track changes in women’s fashion characteristics over the decades.
Dr. Zajdera explained, “We utilized a unique computer tool created by our team to quantify aspects such as dress length, waistline, and neckline along the vertical body axis. This provided consistent measurements for comparison over time.”
Interestingly, the results demonstrated a cyclical change in style popularity approximately every 20 years. Fashion trends rise, fade, and eventually resurface.
“Our mathematical model is based on the psychological principle of ‘optics,’ which suggests that successful innovations should be distinctive yet familiar,” Zajdera noted.
Take, for example, skirt lengths: they shortened from the early 1900s into the flapper styles of the 1920s, lengthened mid-century, shortened again with the 1960s miniskirts, and lengthened during the hippie era of the 1970s.
However, the researchers observed that since the 1980s, this distinct 20-year cycling of hemline lengths has blurred, with varying lengths emerging simultaneously.
“Since the mid-1980s, fashion trends have accelerated, causing the 20-year rule to become less pronounced. Nevertheless, it still exists,” Zajdera pointed out. “Today, we enjoy a greater diversity in styles.”
The researchers suggest that this trend may reflect broader societal changes, impacting not only fashion but also music, art, dog breeds, and baby names.
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Source: www.sciencefocus.com
