[Tikkin]

To me it seems obvious that it was the 70's. We have Texas Chainsaw Massacre, Halloween and ok so Friday the 13th was 1980.. but that's still pretty close. Then we have other classic horrors like Last House On The Left and The Hills Have Eyes.

It seems to me that the 1980s was an explosion of teen slasher films using a formula. Some of them of course were great but there was a lot more crap about.