Memory is divided into different types, and each type has its own special features. Let’s break it down:

1. Short-Term Memory (STM):

   • How Much: Can hold about 5 to 9 pieces of information at once.
   • How Long: Lasts about 15 to 30 seconds without practice.

2. Long-Term Memory (LTM):

   • How Much: Can store an almost unlimited amount of information.
   • How Long: Can keep information from a few minutes to a lifetime.

3. Working Memory:

   • This is a part of short-term memory that helps us actively think about and work with information.
   • How Much: Usually holds about 4 items at a time.

4. Sensory Memory:

   • How Much: Can take in a lot of information very quickly.
   • How Long: Visual information (like pictures) lasts about 1/4 of a second, while sounds can last up to 3 seconds.

These different types of memory are really important for understanding how we think and learn in psychology.