Error-correction strategies are essential considerations for behavior analysts implementing discrete trial training with children with autism. The research literature, however, is still lacking in the number of studies that compare and evaluate error-correction procedures. The purpose of this study was to compare two error-correction strategies: Independent Probe and Delay across learners with autism in an intensive intervention program. Two studies were conducted. The first study compared the two procedures across receptive tasks for 3 individuals, and differential effects were seen across learners. The second study compared the two procedures across tact trials with two of the same learners and found that individual differences were noted, but in addition, the more effective error-correction strategy was consistent across the two verbal operants (i.e., receptive in Study 1, tacts in Study 2). These combined studies suggest the effectiveness of error-correction strategies may be individualized to the learner but may generalize across operants.

The Kolmogorov – Avrami theory of crystallization is widely used for simulation of polarization switching kinetics in ferroelectrics. In the present study, a fractional modification of the Kolmogorov – Avrami model is examined in view of the application to polarization switching current in ferroelectrics. The approach is based on the numerical calculation of the Caputo fractional derivative with respect to the time-dependent function relating to the switching transients. The results of computational experiments are demonstrated with variation of both the parameters of domain growth and the order of time-fractional derivative. A comparison of the simulation results with experimental data and the corresponding statistical estimates are also carried out.