Measures of human sensitivities to various sweet compounds conducted at threshold (91 subjects, 7 sweeteners) and at suprathreshold levels (9 subjects, 12 sweeteners) show interindividual differences. Multidimensional analysis indicates that sweet taste can be represented in a tridimensional continuum if 12 compounds are considered. Results are speculatively interpreted as indirect evidence for the existence of several receptor sites cooperating in sweet taste chemoreception.