The age at which a male first sees pornography is associated with certain sexist attitudes later in life, according to a team of researchers from the University of Nebraska.
Their survey revealed the younger the first viewing occurred, the more likely a male was to want power over women.
While if they were older, they were more likely to be sexually promiscuous.
Of the 330 undergraduates surveyed, with a median age of 20, the average age they first saw pornography was 13.
The youngest was only five, while the oldest was 26.
The unpublished findings were presented at a convention in Washington.