McConaughey or Culkin? Algorithm predicts actors' peak years

Researchers say best years tend to be preceded by rise in number of acting credits

Macaulay Culkin peaked young, Jane Lynch hit the big time in her late 40s and Matthew McConaughey's mid-career resurgence is the stuff of legend.

Now researchers say they have developed an algorithm that predicts with 85% accuracy whether an actor is yet to have their most productive year, or whether they have already peaked.