Introverts and extroverts

[11] NICOLL M, 1921, DREAM PSYCHOL

[12] OSTWALD W, 1910, GROSSE MANNER

[13] TANSLEY AG, 1920, NEW PSYCHOL

[14] Thorndike E. L., 1914, ED PSYCHOL, DOI 10.1037/13796-000

[15] Watson J. B., 1919, PSYCHOL STANDPOINT B

[16] WEININGER O, 1916, SEX PERSONALITY

[17] WELLS FL, 1917, MENTAL ADJUSTMENTS

[18] WHITE William A., 1916, MECH CHARACTER FORMA

[11] NICOLL M, 1921, DREAM PSYCHOL

[12] OSTWALD W, 1910, GROSSE MANNER

[13] TANSLEY AG, 1920, NEW PSYCHOL

[14] Thorndike E. L., 1914, ED PSYCHOL, DOI 10.1037/13796-000

[15] Watson J. B., 1919, PSYCHOL STANDPOINT B

[16] WEININGER O, 1916, SEX PERSONALITY

[17] WELLS FL, 1917, MENTAL ADJUSTMENTS

[18] WHITE William A., 1916, MECH CHARACTER FORMA