Economics students learn about horizontal integration and an invisible hand stimulating the private sector, so perhaps it’s no surprise they get the most sex.

Australia’s University of New South Wales adjunct professor Tim Harcourt says studying demand and supply boosts love lives.

“When it comes to love and sex, you wouldn’t think the first word that pops into people’s heads is ‘economics’,” he said in a statement on Tuesday.

“Imagine the strike rate you’d get with a double degree.”

Economics students have an average of five sexual partners during their time at university, compared with two for those studying environmental science, a UK study of 4600 undergraduates has found.

“They obviously spend too much time hugging trees instead of people,” Prof Harcourt said.

Social work, community care, marketing, hospitality and agriculture students also scored highly.

“Sensitivity and listening help you score,” Prof Harcourt said.

Philosophy, education, earth sciences and theology weren’t so lucky.

“Too much thinking and not enough action,” Prof Harcourt said, adding geology types weren’t “getting their rocks off”.