Do you know how many calories are in a chocolate digestive biscuit and would you stop eating the packet if the portion control signs were bigger?

According to new Irish research portion size markings on snack packaging influence how much people eat.

Men eat fewer crisps and women eat fewer chocolate biscuits when portion sizes are clearly marked on packaging, according to new research by the ESRI’s Behavioural Research Unit. The researchers conducted two controlled behavioural experiments to test this.

To find out more we are joined by Newstalk’s Senior Snack correspondent Henry McKean.