Guilford was one of the first academic researchers who dared to conduct a study of creativity.
If you have tried solving this puzzle, you can confirm that your first attempts usually involve sketching lines inside the imaginary square.
The correct solution, however, requires you to draw lines that extend beyond the area defined by the dots.
According to an industry trade group, from June 2009 to June 2010, cell phone subscribers sent 1.8 trillion text messages. In other words, most of us spend our days walking around with our noses buried in our cell phones, Black Berrys, i Phones, etc.
And while we're doing that, we're tuning out the people who are actually in the same room as us.
Now, you can check in with Jack online to see what he's thinking and weigh in with your own comments online and on TV.
Although studying creativity is considered a legitimate scientific discipline nowadays, it is still a very young one. One of Guilford’s most famous studies was the nine-dot puzzle.
We seem to have long ago crossed the line as to where doing this stuff is appropriate - people take calls while they're out to dinner, text or check e-mail while on a date, you name it.
Some experts say it's time to take a step back and reassess.
Speakers, trainers, training program developers, organizational consultants, and university professors all had much to say about the vast benefits of outside-the-box thinking.
It was an appealing and apparently convincing message.
At the first stages, all the participants in Guilford’s original study censored their own thinking by limiting the possible solutions to those within the imaginary square (even those who eventually solved the puzzle).