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We do not grow old as long as we strive to improve ourselves.

Magazine / Mind & Psychology

Self-Care: Another Name for Stress Relief

Jul 4, 2026 · OIYO Research Institute

The essence of stress relief is self-care. By dividing it into three pillars—physical, mental, and emotional/daily care—"what to do" becomes a concrete list of actions.

Magazine / Mind & Psychology

Smile Mask Syndrome: When the Compulsion to Appear Bright Swallows Emotions

Jul 4, 2026 · OIYO Research Institute

A psychological state of anxiety where one is unable to express negative emotions due to the compulsion to maintain a bright appearance. It is an emotional suppression pattern closely linked to Good Boy/Girl Syndrome and Eldest Child Syndrome.

Magazine / Mind & Psychology

Yerkes-Dodson Law: Zero stress leads to zero performance

Jul 4, 2026 · OIYO Research Institute

The inverted U-shaped relationship between arousal and performance discovered by Yerkes and Dodson in 1908. Performance drops when stimulation is either too low or too high, with an optimal level of tension producing the best results.

Magazine / Mind & Psychology

Personality Test Glossary — Big Five, MBTI & DISC

Jun 24, 2026 · OIYO Research Institute

A glossary of the core terms behind personality tests — the Big Five factors (OCEAN), the four MBTI dimensions, the four DISC styles, and concepts like temperament, reliability, and validity.

Magazine / MBTI 사전

MBTI 16 Types Dictionary — Nicknames and Core Traits of the 16 Personality Types

Jun 22, 2026 · OIYO 편집부

A hub that gathers the nicknames and core traits of the 16 MBTI personality types (INTJ~ESFP) in one place. The types are organized into four groups — Analysts, Diplomats, Sentinels, and Explorers — and each type links to a detailed dictionary entry covering strengths, weaknesses, careers, and relationships.

Magazine / Mysticism

Blood Type A Personality: The Folk Stereotype

Jun 16, 2026 · OIYO Research Team

Blood Type A personality is a folk stereotype in Korea and Japan, not a scientific personality model. This entry explains the cultural image while making clear that ABO blood type has no reliable proven link to character.