Right-wing supporters look to a glorified past while left-wingers are optimistic about the future

The division between right and left around the world has rarely felt more polarised. Of course there have always been differences between people on the different ends of the political spectrum, but now it seems they are living in different worlds entirely. This is perhaps related to the tendency for those on the right to focus on the past and to strive for a world that once was and the tendency for those on the left to do the opposite.

Take two of the most famous political slogans of recent times: Barack Obama’s “Yes we can” and Donald Trump’s “Make America great again”. While Obama’s message evokes glimpses of a prosperous future, Trump’s expresses a nostalgic outlook towards the past.

In the UK, the successful Brexit campaign, which was largely led by conservatives, famously called on people to “take back control”, while the Labour party has just launched its local election campaign under the slogan “Britain’s future”.

The pattern is similar around the world. In South Africa, the right-wing Freedom Front Plus has recently carried the slogan “Stop the decay”. For the upcoming presidential elections in Mexico, the left-wing National Regeneration Movement is mobilising voters with “United for the transformation”.

In a recent study, I explored whether, within the general public, people on...

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