When playing tournaments and especially cash games Tight/Aggressive is a great style of play for different strategies. For Example:
JJ vs AK
By now you should bet 3/4 of what the pot is currently at. by doing this you are allowing the opponent to view his hand and see that you have not bet pot or even exceeded the pot size which encourages him to call or raise suspecting you of bluffing
and that he thinks he has the best hand.
Now you are in a tight spot because he now has the higher full house. If this is a NL game you should not check even though you are playing Tight/Aggressive because by doing this you are allowing him to put in an excessive amount of chips into the pot which could cause you to fold your hand. so the appropriate bet now would be to bet approximately 1/4. By doing this your showing that you have a hand which can cause the opponent to just call to see the river.
This card now leave you with quad jacks. Now that you have quads you should be double what the pot is. This leaves the opponent in a position that he will not want to fold which put him at a decision of all in or fold the highest full house.
Hey all i hope this helped lot of you poker players out there. Don't forget to subscribe =] Many more to come. Thanks and Merry Christmas