Beatlemania surpassed any previous examples of fan worship in its intensity and scope. Initially, the fans were predominately young adolescent females, sometimes called "teenyboppers", and their behaviour was scorned by many commentators, particularly conservatives. By 1965, their fanbase included listeners who traditionally shunned youth-driven pop culture, which helped bridge divisions between folk and rock enthusiasts. During the 1960s, Beatlemania was the subject of analysis by psychologists and sociologists; a 1997 study recognised the phenomenon as an early demonstration of proto-feminist girl power. The receptions of subsequent pop acts – particularly boy bands – have drawn comparisons to Beatlemania, although none have replicated the breadth and depth of the Beatles' fandom nor its cultural impact.