Medina Bracamonte N.A., Kitaeva E.M., Medina Brakamonte D.D., Chubun I.Yu. Motivation for Success: perfectionism and procrastination in adults learning at professional training programs case Vestnik of Saint Petersburg University. Psychology (2024. Vol. 14, no. 4, pp. 731–742) DOI 10.21638/spbu16.2024.410 11