US college students report higher self-talk frequencies than Polish students across all STS subscales. US students report higher internal dialogical activity than Polish students on total IDAS-R and most subscales. Correlations between STS and IDAS-R scores range from 0.24 to 0.62 in both samples. Total STS and IDAS-R scores correlate at 0.56 in Polish sample and 0.62 in US sample. Canonical correlations between STS and IDAS-R reach 0.64 explaining 41% variance. EFA yields four factors with partial overlap between self-talk functions and dialogue types. Self-management self-talk most common in both samples. Self-reinforcement self-talk least common in both samples. Social and spontaneous dialogues highest in both samples. Maladaptive and confronting dialogues lowest in both samples. Self-critical self-talk links to ruminative and confronting dialogues. Social-assessment self-talk links to social and supportive dialogues. Self-talk represents dynamic self-regulation while dialogues represent contemplative identity reflection. Overlap between measures is 30-40% indicating complementary intrapersonal modes. STS functions load separately from most IDAS-R types in EFA.