Sam Gosling pokes around people's homes, into their cupboards and under their beds. But it's not voyeuristic - such off-the-wall research is delivering crucial insights into personality, Matthew Reisz discovers
... but our tastes are swayed by price, packaging and other social psychological factors in ways we're often unaware of. Matthew Kieran considers the fragility of aesthetic opinions in the latest in our fortnightly series allowing academics to step outside their field of expertise