The average attention span for a goldfish is often cited as nine seconds. However, this claim has been debunked by several sources. In fact, goldfish can remember things for months and have good memories, which neuro-psychologists use as a model for memory formulation. The claim that humans have an attention span shorter than that of a goldfish is also not supported by scientific evidence. Attention span is not a concrete state-of-mind that can be defined in a blanket statement, and it varies depending on what one is paying attention to. The idea that humans have a shorter attention span than goldfish is a myth that has been perpetuated for many years.