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BRAINGAMES








                                                                    Big and small

                                                                    Psychologist Edward d Bradford Titchener discovered that
                                                                   our judgment about t the size of something is affected by
                                                                   the size of other thing gs around it. The red circles in the
                                                                               d the o one bel         es in the
                                                                   picture here and the o one below are the same size, but the
                                                                   one here looks bigger r because it is surrounded by smaller
                                                                   circles. Moviemakers use this simple effect to make
                                                                  monsters appear muc ch bigger than they actually are.















                      Wrong directi
                                      ti
                                        ion
                                        ion
                     into think
                     The Müller-Lyer ill
                               yer illusion m
                                        misleads the brain
                                        rr
                       o thinking that the midd dle section of the line
                    on the left is longer than th he one on the right.
                                        h
                  of length and depth.
                    This is because the open arrowheads extend
                   beyond the line, playing with our perception





















         Some of the most effective optical illusions can be
                                        o
         produced with simple lines and shapes. Such illusions
                                        f
         play with our perceptions of angles, size, and shape,
         causing us to make unconscious assumptions about
                                        c
                                        e
         what we see. Even when we know how they work,
         the illusions are difficult to shake off.



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