US President Barack Obama has called for more research into the effects of violent video games on children.

As reported by Gamesindustry, the President has directed Congress to fund the studies, adding "We don't benefit from ignorance. We don't benefit from not knowing the science.”

The research is one of a series of measures intended to curb gun violence following the shootings at Sandy Hook.

Obama’s other proposals centred on gun control, and included universal background checks and a ban on the sale of assault weapons and high-capacity magazines.

Earlier this week, Vice President Joe Biden identified 19 executive actions whose purpose was to curtail gun crime. Video games were wholly absent from his recommendations to the President.

In related news, Missouri State Rep. Diane Franklin has put forth a bill that seeks to implement a one per cent tax on violent video games.

The funds raised would be used for mental health programs and law enforcement.

The tax would apply to games rated Teen, Mature, and Adults Only by the Entertainment Software Rating Board (ESRB).

"History shows there is a mental health component to these shootings," said Franklin, who neglected to mention why her bill was directed at video games.

ESRB operator the Entertainment Software Association was against the proposed legislation.

"Taxing First Amendment protected speech based on its content is not only wrong, but will end up costing Missouri taxpayers," it said.