Replicating and Extending the Link Between Jung And The Big Five: A Cross-Validation of the Trait Response Personality Indicator

This study examines the Trait Response Personality Indicator (TRPI) by deriving sixteen Jungian type labels from 26-item Big Five profiles in a 2,916-participant sample. Tenfold cross-validation of profile--prototype similarity produced a grand-mean Fisher-transformed correlation of 0.833 (range 0.598--0.913 across types) and permutation testing with 50,000 random shuffles never equaled the observed fit ($p < 2 \times 10^{-5}$). Classic dichotomy effects were robustly replicated: Intuition exceeded Sensing by 0.24 SD in openness, Judging outscored Perceiving by 0.21 SD in conscientiousness, Thinkers displayed 0.29 SD lower agreeableness and 0.24 SD lower neuroticism than Feelers, while Extraverts surpassed Introverts by 0.23 SD in extraversion. Partitioning the sixteen types into four ``cognitive clusters'' (SF/NTs, FS/TNs, ST/NFs, TS/FNs), extends typological insight beyond classical types, giving rise to a deeper understanding of our inner workings.