We consider a general …rst order scalar di¤erence equation with and without Allee e¤ect. The model without Allee e¤ect represents asexual reproduction of a species while the model including Allee e¤ect represents sexual reproduction. We analyze global stabilities of both models analytically and compare the results obtained. Numerical simulations are included to support the analytical results. We conclude that Allee e¤ect decreases global stability of a nonnegative …xed point of the model. This result is di¤erent from the local stability behavior of the same …xed point of the model.

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