Ishihara Test Effect by Liam Vanon

Effect

The Ishihara Test Effect is a magic trick that uses a scientific color vision test to create a surprising reveal. The magician shows a series of cards with colored dots and hidden numbers, asking the spectator if they can see the numbers clearly. The spectator correctly identifies the numbers, confirming they are not color blind. Then, the magician reveals an unexpected twist—the backs of the cards, which the spectator confidently remembers as gray, have actually changed color without them noticing.

Full Details

The trick is based on the real Ishihara test, which is used to detect color blindness. The magician presents the test cards, and the spectator successfully identifies the numbers, proving they have normal color vision. However, the real magic happens when the spectator realizes they misremembered the color of the card backs. The effect plays with perception and memory, making it a strong mentalism-style trick with a visual surprise.

Who Should Consider the Trick

This trick is ideal for magicians who enjoy psychological effects and mentalism. It works well in close-up performances, parlour shows, or even stage settings. Since it relies on a scientific premise, it can appeal to audiences who appreciate logic-based magic. It is also a good choice for performers who want a self-contained routine that doesn’t require complex sleight of hand.

Difficulty

The Ishihara Test Effect is easy to perform. The method is straightforward, allowing the magician to focus on presentation rather than difficult moves. Liam Vanon, the creator, emphasizes that the mechanics are simple, making it accessible to beginners while still strong enough for experienced performers.

What Magicians Say

Liam Vanon describes the effect as "so easy it will allow you to focus only on your presentation." The surprise ending catches audiences off guard, even if they are familiar with the Ishihara test. The trick has been praised for its clever use of a well-known scientific concept to create a baffling magical moment.

The effect is self-contained, meaning no additional setup is needed once the props are prepared. This makes it a practical choice for performers who want a quick, impactful routine. The combination of psychology, memory, and visual deception makes it a standout trick for those looking to add something different to their repertoire.