Archimedes' principle | uncertainty principle | Aufbau principle | The Principle of Evil Made Flesh | Bernoulli's principle | An Essay on the Principle of Population | Tramway Quality Handicap | Pauli exclusion principle | Pareto principle | New York Handicap | Homestead principle | Excelsior Breeders' Cup Handicap | A Man of Principle | Superposition principle | Scheimpflug principle | Saratoga Breeders' Cup Handicap | San Juan Capistrano Handicap | Sabatier principle | Roger Williams Handicap | Principle of indifference | Pontryagin's minimum principle | Philip H. Iselin Breeders' Cup Handicap | Peter Principle | Peter principle | Mediocrity principle | Maupertuis' principle | Maryland Million Distaff Handicap | Marlboro Cup Invitational Handicap | Mach's principle | Le Chatelier's principle |
He has worked extensively in the field of Biological game theory, and, in 1990, devised a model showing that Zahavi's well-known Handicap principle could theoretically exist in natural populations.
Starting in the 1970s, Amotz Zahavi observed the babbler at length, giving rise to his theory of signal and its correlative, the handicap principle.
Tor Nørretranders, in The Generous Man conjectures how intelligence, musicality, artistic and social skills, and language might have evolved as an example of the handicap principle, analogously with the peacock's tail, the standard example of that principle.