Before revision:  Specifically, we require that the individual  consume at a rate that is greater than a certain proportion \alpha\le1 of her consumption habit . Our habit-formation model allows for both addictive ( \alpha=1 ) and non-addictive ( 0<\alpha<1 ) habits.
After revision:  Specifically, we require that the individual consume at a rate that is greater than a certain proportion \alpha\le1 of her consumption habit , which is the exponentially-weighted average of past consumption rates. \alpha=1 ) and non-addictive ( 0<\alpha<1 ) habits.