The theory of two factors

[1] *CO U, 1912, COL U CONTR ED COLL, V53

[2] SPEARMAN, 1904, AM J PSYCH, V15, P274

[3] THORNDIKE, AM J PSYCH, V20, P364

[4] YULE U, INTRO THEORY STAT, P235

[5] J PSYCH, V5, P73

[6] B J PSYCH, V5, P59

[7] 1910, MANUAL MENTAL PHYS T

[8] 1912, BRIT J PSYCHOL, V5, P56

[9] BRIT J PSYCH, V5, P75

[10] BRIT J PSYCH, V4, P293

[1] *CO U, 1912, COL U CONTR ED COLL, V53

[2] SPEARMAN, 1904, AM J PSYCH, V15, P274

[3] THORNDIKE, AM J PSYCH, V20, P364

[4] YULE U, INTRO THEORY STAT, P235

[5] J PSYCH, V5, P73

[6] B J PSYCH, V5, P59

[7] 1910, MANUAL MENTAL PHYS T

[8] 1912, BRIT J PSYCHOL, V5, P56

[9] BRIT J PSYCH, V5, P75

[10] BRIT J PSYCH, V4, P293