A government has found that 2 months elapse before it can identify a problem to address with policy action. It has been found that 1 month is required to determine the appropriate policy action. Finally, it has been concluded that the total time required between the initial presence of the problem and the effects of a policy action to be realized is 12 months. What are the remaining policy time lag and its duration?

Recognition lag alludes to the time it takes an administration to detect an issue that needs an arrangement activity.

Implementation lag alludes to the time it takes an administration to figure out a reasonable approach to tackle the front and centre issue.

Effectiveness lag alludes to the time a monetary approach takes to achieve the ideal result

The public authority requires a month to think of a fitting arrangement to tackle the issue.

Hence, the implementation lag = $1$month.

$12$months pass from the time the issue is perceived to the time the impacts of the picked arrangement are felt. It implies that the three lags are spread over a time of the year

Total time elapsed = recognition lag + implementation lag + effectiveness lag.

calculating the remaining lag and its duration

$12$months = $2$month + $1$month + effectiveness lag.

Thus, effectiveness lag = $12$$-3$= $9$

Hence the duration is $9$months.