Think quickly and answer this question: How tall is the tallest redwood tree? 1,000 feet, 1,500 feet or 2,500 feet? Got your pick? Great. You\u2019re incorrect! The tallest redwood tree is actually 379.9 feet tall. You might be thinking, \u201cHey, that\u2019s not fair! That wasn\u2019t even an option!\u201d And you would be totally correct. This situation is what those of us who specialize in the world of neuroscience call availability bias. Availability bias occurs when your brain creates a mental shortcut that places significance on immediate examples. The options that were given \u2014 1,000, 1,500 and 2,500 feet \u2014 were credible to you because they were available when you needed an answer.