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The Influence of different types of predictor displays in a longitudinal vertical takeoff and landing (VTOL) hover task Is analyzed in a theoretical study. Several cases with differing amounts of predictive and rate Information are compared. The optimal control model of the human operator is used to estimate human and system performance in terms of root-mean-square (rms) values and to compute optimized attention allocation. The only part of the model which is varied to predict these data is the observation matrix. Typical cases are selected for a subsequent experimental validation. The rms values as well as eye-movement data are recorded. The results agree favorably with those of the theoretical study in terms of relative differences. Better matching is achieved by revised model input data.