From Traits to Types: Validating Jungian Concepts with the Big Five

Analysis of Trait Response Personality Indicator (TRPI) assigned type profiles (N = 722) showed that aggregated Big Five means aligned with the hypothesised function pairings. Ten-fold cross-validation reached 0.694 accuracy (p = 2.0 × 10−4, Cohen’s h = 1.51), with intra-type similarity r = 0.844. Functional groupings (xxTP, xxTJ, xxFJ, xxFP) yielded strong group–prototype correlations (Extraversion r = 0.81; Conscientiousness r = 0.79; Agreeableness r = 0.77; Neuroticism r = 0.80; all p < 10−100). An unsupervised hierarchical Pearson + Euclidean procedure recovered four clusters (silhouette 0.162) mapping one-to-one onto TRPI’s 4F modes (mean similarity S = 0.858). In a large public dataset (N = 1,013,558), cross-validated type assignment achieved 0.824 accuracy with r = 0.92 (h = 1.77). These converging findings provide quantitative evidence that Jungian type theory nests coherently within Big-Five trait space, positioning TRPI as a replicable bridge between typological and dimensional perspectives.