Shopping alone can be a handy way to save money at the supermarket and other stores.
Researchers and money specialists say solo shopping removes the potential distraction of friends and family — especially children — taking your mind off the job.
Overseas studies have found that up to two-thirds of the stuff we buy was never intended to be purchased, while local consumer group Choice says couples who shop together often put more in their trolley because each person has different views about what's important.
Consumer psychologist and Deakin University senior lecturer Paul Harrison said shopping with other people was a social experience, and friends might seek to impress friends.
"There is strong research showing that having children with you is probably not the best way to do it — they distract you from making good decisions," he said.
