pleasure-pain principle(n = noun.cognition) pleasure principle, pleasure-unpleasure principle - (psychoanalysis) the governing principle of the id; the principle that an infant seeks gratification and fails to distinguish fantasy from reality;
is a kind of principle

accounting principle, archimedes' principle, basic principle, bitter principle, exclusion principle, first principle, fundamental principle, gestalt principle of organization, guiding principle, huygens' principle of superposition, in principle, indeterminacy principle, judicial principle, le chatelier principle, le chatelier's principle, le chatelier-braun principle, legal principle, life principle, localisation principle, localization principle, mass-action principle, moral principle, pauli exclusion principle, pleasure principle, pleasure-unpleasure principle, principle, principle of equivalence, principle of liquid displacement, principle of parsimony, principle of relativity, principle of superposition, reality principle, superposition principle, uncertainty principle, vital principle, working principle