Final answer:
Sensory memory lasts for a very brief period, short-term memory holds about seven bits of information, and long-term memory is divided into explicit and implicit memory.
Step-by-step explanation:
In the Atkinson-Shiffrin model of memory, sensory memory is the storage of brief sensory events, such as sights, sounds, and tastes. It lasts for a very brief period of time, up to a couple of seconds. Sensory information that is deemed valuable moves into the short-term memory system.
Short-term memory holds about seven bits of information before it is forgotten or stored, as well as information that has been retrieved and is being used. The capacity of short-term memory is often referred to as the 'magic number' 7 plus or minus 2.
Long-term memory is divided into two types: explicit memory and implicit memory. Explicit memory includes episodic memory and semantic memory, which are memories that we consciously try to remember and can be put into words. Implicit memory includes procedural memory and things learned through conditioning.