Members of K-pop group Seventeen during the filming of ‘Know Thyself,’ which featured psychologist Dr Song Hyung-seok in 2022. Photo: Seventeen/X
Before the Myers-Briggs Type Indicator (MBTI) became a hot topic, South Koreans relied on blood types (A, B, AB and O) as a way to identify personality traits.
This blood type personality theory assigns specific characteristics to each blood type and it was used when people analysed one another.
