Definition of "psychology"

Idleness is the beginning of all psychology .

2023, Friedrich Nietzsche, Twilight of the Idols: Bilingual English & German Edition, Newcomb Livraria Press, page 9

Alcinous in Didascalius chapter 23 uses the three physical locations of the human soul from Timaeus 69c–72c […] to lead into a dedicated discussion of psychology.

2010, Harold Tarrant, “Platonism before Plotinus”, in Lloyd P. Gerson, editor, The Cambridge History of Philosophy in Late Antiquity, volume 1

For generations, historians have conjectured everything from a warped psychology to a deformed body as accounting for Elizabeth's preferred spinsterhood...

1970, Mary M. Luke, A Crown for Elizabeth, page 8

In the United States, the psychology of a laborer, a farmer, a businessman does not differ in any important respect.

1969, Victor Alba, The Latin Americans, page 42