most psychology -- including Freudian psychoanalysis -- is extremely individualistic, especially in practice. Or it focuses on the behavior and/or consciousness of the "average" person in society...
Kleinian psychoanalysis isn't "individualistic" if you mean by this has little room for finding the source of psychopathology in social relations. Though it gives a significant role to "constitutional" factors (particularly in the case of schizophrenia, manic depression and autism), it emphasizes the role of social relations. This also provides the basis for the notion of an average individual type (e.g. a type dominated by "greed") since common relations will generate a common type (this is the central implication of the relational concept of essence spelled out in the sixth thesis on Feuerbach).
Keynes's economics (a) gives a significant role to irrational psychology in the determination of economic behaviour and (b) most derives its understands this irrational psychology from psychoanalysis. I think (a) is true of Marx's economics as well. In Marx, it derives from the sublation of German idealism, specifically of the role Hegel gives to the "passions" in his account of the the historical process through which mind develops to rationality.
Ted
