Our memories are easily contaminated. We can be made to believe we rode in a hot air balloon or kissed a magnifying glass — even if those things never happened. So how do we know which of our memories are most accurate? This week, psychologist Ayanna Thomas explains how we remember, why we forget, and the simple tools we all can use to sharpen our memories.

If you like our work, please consider supporting it! See how you can help at support.hiddenbrain.org. And to learn more about human behavior and ideas that can improve your life, subscribe to our newsletter at news.hiddenbrain.org.