Are negative headlines more effective?

Are headlines more effective when they are negative? Someone at the Telegraph seems to think so.

The recent Ofsted report:

"The Pupil Premium: how schools are spending the funding successfully to maximise achievement"

is reported in the Telegraph as:

"Ofsted: 'signifiant minority' of schools wasting pupil premium"  ( page)

Are they trying to take advantage of Negativity Bias? Or do they feel their readers might be receptive to a little Monday morning pessimism?

To be fair, the accompanying press release does mention a "significant minority" who are struggling (and even spells "significantly" correctly). But journalists usualy prefer to work from the original source material rather than taking a press release at face value, right? Right?