Doom and gloom commentators should check their pessimistic remarks, as they can talk down the economy and the markets, Giorgio Questa, senior visiting fellow in finance and director for Msc in banking and finance, Cass Business School, told CNBC.
"I have a chip on my shoulder about some commentators, for example Mr. Roubini and whatever," Questa told "Squawk Box Europe."
"I think it brings bad luck in a way. Yes, you can give a bad spin to everything. Do you really want a big recession?" he added.
Nouriel Roubini, co-founder and chairman at RGE Monitor, also known as Dr. Doom, told CNBC Thursday that the stress tests carried out on US banks lacked credibility and weren't stressful enough, as the actual economic data were far worse than the worst case scenario of these tests.
- Watch the full interview with Giorgio Questa above.
"You see, nothing is perfect in this world," Questa said. "Now, should we try to say that this is a step forward, which is doing something important, or shall we go on saying no, no, it is going to be terrible, and things have to collapse and the market is going to go down to '29 (level)?"
"Well in my mind I think it is better to say it is not perfect, it can be improved, but it's a step forward," he added.