Final answer:
While Michael Kammen's three categories of collective memory are not listed here, understanding individual memory formation, storage, and retrieval is crucial, including recognizing different memory types and the potential for errors in memory.
Step-by-step explanation:
The three categories of collective memory as defined by Michael Kammen are not directly mentioned here, however, the text suggests analyzing memory through various perspectives and studies. For collective memory, which pertains to how groups, societies, or nations remember the past, it is instrumental to understand individual memory processes. This encompasses understanding how memories are formed, stored, and retrieved, which can be conceptualized through models such as Atkinson and Shiffrin's model, describing the stages of memory from sensory to long-term, or through errors in memory, such as those categorized by Schacter into forgetting, distortion, and intrusion. Additionally, various types of memories, such as explicit, flashbulb, and implicit memories, contribute to the collective memory, which can be affected by cultural, social, and emotional factors as outlined by various researchers.