Dating flats to rent classifieds advertising tickets

Let’s look a little more closely at these surprising results.

Even though they weren’t instructed to restrain themselves from considering such a solution, they were unable to “see” the white space beyond the square’s boundaries.

Only 20 percent managed to break out of the illusory confinement and continue their lines in the white space surrounding the dots.

Because the solution is, in hindsight, deceptively simple, clients tended to admit they should have thought of it themselves.

Because they hadn’t, they were obviously not as creative or smart as they had previously thought, and needed to call in creative experts. The nine-dot puzzle and the phrase “thinking outside the box” became metaphors for creativity and spread like wildfire in marketing, management, psychology, the creative arts, engineering, and personal improvement circles.

The first group was given the same instructions as the participants in Guilford’s experiment.

The second group was told that the solution required the lines to be drawn outside the imaginary box bordering the dot array.

Overnight, it seemed that creativity gurus everywhere were teaching managers how to think outside the box.

Management consultants in the 1970s and 1980s even used this puzzle when making sales pitches to prospective clients.

The symmetry, the beautiful simplicity of the solution, and the fact that 80 percent of the participants were effectively blinded by the boundaries of the square led Guilford and the readers of his books to leap to the sweeping conclusion that creativity requires you to go outside the box.

The idea went viral (via 1970s-era media and word of mouth, of course).

The correct solution, however, requires you to draw lines that extend beyond the area defined by the dots.

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