They were a series of new kinds of method to discriminate the aberrant responses behaviors in psychological tests which based on Guttman model and Item response theory.

Finally,numerical simulations are performed to demonstrate the effectiveness of the proposed method,and it shows that two different time scales exist in reaction error system.

In autocatalytic chemical reaction system,the reaction error was defined as the difference beweeen actual reaction state and control objective,and based on Lyapunov stability theory and anti-synchronization thought,a general scheme was presented,which can be used to control the concentration of the whole reaction system in some special states by selecting the controller and the input signal.