Retroactive interference<span> occurs when newly acquired information inhibits our ability to recall previously acquired information. </span>Interference<span> theory attempts to </span>explain why<span> we have trouble remembering things. Learning new material can sometimes interfere with our ability to recall previously learned the material. </span>
Its membership dropped sharply, Started at 60,000 members in 1919,down to 24,000 by 1928.