Abstract In multiple-choice tests, guessing is a source of test error which can be suppressed if its expected score made negative by either penalizing wrong answers or rewarding expressions partial knowledge. Starting from the most general formulation necessary and sufficient scoring conditions for to lead an loss beyond test-taker’s knowledge, we formulate class optimal functions, including pr...

The long-term two-bottle choice test is commonly used as a simple screen to examine the acceptance of taste solutions by rodents. As part of an investigation of factors influencing the sensitivity of the two-bottle choice test, we determined the extent to which test duration influenced test sensitivity. C57BL6/J and 129X1/SvJ mice received four series of eight two-bottle tests, with each test l...