Sensory memory: buffer for sensory information, briefly holds it before passing (some of) it along. Sperling experiment: most people could remember ~ 4 or 5 from whole display, with partial-report method, could remember any row, iconic memory: large capacity, but fades quickly, echoic memory: ~5-10 seconds. Working memory=active maintenance of information in short-term storage. Long term memory=holds info for hours, days, weeks and years. Photographic memory: very rare, would be like retaining sensory memory for a much longer time, but, often distorted constructive (like other kinds of memory) Capacity of short term memory (george miller)=stm can hold about seven meaningful items at once, and put more new numbers then old numbers begin to fall out. Rehearsal=the process of keeping info in stm by mentally repeating it. Chunking=combining small pieces of info into larger clusters or chunks. Encoding=process we transform what we perceive, think, or feel into an enduring memory.