Brainteaser could 'boost your IQ' if you can work it out - are these lines really curved?

dailyrecord.co.uk:

Scots looking to boost their IQ may turn their attention to brainteasers and puzzles. These can improve your creativity, increase your mind’s flexibility, and slow down cognitive decline as you get older.Award-winning psychologist Dr Lalitaa Suglani insists it is important to engage in activities that stimulate the brain, including optical illusions, learning a new language, and puzzle-solving.The expert says the benefits of regularly giving your brain a workout are aplenty.

Speaking to Twist Museum, an illusion museum in London, Dr Lalitaa outlined the best methods to engage your brain and get more switched on."Engaging with activities like illusions train the brain to adapt, shift perspectives and tolerate ambiguity," Dr Lalitaa said. "It encourages mental flexibility - skills that enhance problem solving and critical thinking. “Perception-based challenges also push us to think outside of the box.

Creative thinking encourages alternative interpretations and unconventional solutions to help boost creativity. “Concentrating on brain stimulating activities...

requires attention to detail, promoting mindfulness and reducing stress through immersive engagement." At first glance, the image below appears to show curved lines - but is that really the case?