Memory and Forgetting in Cognitive Psychology

Forgetting is not inherently bad; it can help organize and prioritize information in the brain.
Forgetting can be inconvenient, especially in social situations (e.g., not remembering someone's name).

For memory to function properly, three stages must operate correctly: encoding, storage, and retrieval.
- Encoding Issues: Failure occurs when we do not actively pay attention to the information at the time of learning.
- Storage Issues: Memory can fade over time if not used or revisited.
- Retrieval Issues: The memory exists but cannot be accessed, exemplified by the "tip of the tongue" phenomenon.

Introduced by Hermann Ebbinghaus, illustrating how memory retention decreases over time following learning.
Key Findings:
- Right after learning, memory is at its peak.
- Within the first few hours, memory of learned material declines drastically (less than 50% retention).
- Retention stabilizes over time if the information isn't revisited or actively recalled.
Sleep and Memory: Research shows sleeping after learning consolidates memories better than staying awake.

Review information shortly after learning to help retain it.
The act of sleeping is encouraged as it aids cognitive processes related to memory.

Encoding Failure: Memory was never fully formed due to lack of attention or processing at the initial learning stage.
- Example: Identifying the genuine penny among similar looking options highlights poor encoding.
Storage Failure: Memories weaken over time due to lack of use, concept illustrated by memory traces that fade if not revisited.
- Memory Traces: Physical changes in the brain that occur during memory formation, akin to a path in the woods that becomes overgrown from disuse.
- Disuse Theory: Connection strength diminishes if memories are not recalled regularly.
Retrieval Failure: When accessible memories can't be recalled, often due to state-dependent learning, where returning to the original context enhances retrieval.
- Requires environmental cues or states similar to when the information was learned to effectively retrieve it (e.g., chewing the same gum during study sessions and tests).
Interference: New and old memories interfere with each other, leading to forgetting.
- Types of Interference:
- Retroactive Interference: New information hinders recall of old information. Example: forgetting old phone numbers after learning a new one.
- Proactive Interference: Old information obstructs learning of new information. Example: mixing up passwords.

Memories can become distorted over time; recalling a memory involves reconstruction, which can mix in new or altered information.
False Memories: Represent a modified memory that can emerge when new information is incorrectly associated with existing memories.
Importance of careful questioning in clinical and forensic settings to avoid introducing misinformation.

Overview of a wrongful conviction case due to false eyewitness memory.
Titus was wrongfully implicated in a rape case based on a faulty memory leading to his conviction.
His struggle against the legal system points to the grave consequences of memory inaccuracies.

Elizabeth Loftus’s experiments on false memories suggest that memory is reconstructive, like a Wikipedia entry rather than a video recording.
Experiments reveal how easily eyewitness memories can be shaped by leading questions or new information that emerges post-event.

Flashbulb memories are emotionally charged memories that feel intensely vivid but can also be inaccurate.
Characteristics:
- Detailed recollection.
- Strong emotional connections enhance memory recall but do not assure accuracy.
Case examples include significant events (e.g., 9/11) where emotional weight produces strong but potentially flawed memories.