Are humans inherently selfish? A quirky psychological study opens up a centuries-old debate about human nature.
How Batman makes us better behaved
“Batman Effect”: The term used for the boost in focus children get from imagining they are Batman. Glossary
Psychologists - Scientists who study the mind and behaviour.
Milan - A city in northern Italy.
Jean-Jacques Rousseau - An 18th Century Swiss philosopher whose book Reveries of the Solitary Walker extolled the virtues of being alone in nature.
Thomas Hobbes - An English philosopher who is regarded as one of the founders of modern political theory.
Brutish - Rough and unpleasant, like the behaviour of a beast.
Adam Smith - An 18th-Century Scottish economist often known as the "father of economics".
High blood pressure - High blood pressure (hypertension) is when the force of your blood pushing against your artery walls is too high. This puts extra strain on your heart and can increase the risk of health problems if it is not treated.