Psychology: Memory
Encoding, storage, retrieval, and forgetting
Psychology: Memory
Encoding, storage, retrieval, and forgetting
Psychology - Grade advanced
- 1
Define encoding, storage, and retrieval. Then give one original example of each process in a student's learning experience.
Think of memory as a sequence of getting information in, keeping it, and getting it back out.
Encoding is the process of converting information into a form that can enter memory. Storage is maintaining that information over time. Retrieval is accessing stored information when it is needed. For example, a student encodes a biology term by linking it to an image, stores it by reviewing it over several days, and retrieves it when answering a test question. - 2
Explain the difference between sensory memory, short-term memory, and long-term memory. Include approximate duration and capacity for each system.
Sensory memory briefly holds incoming sensory information for a fraction of a second to a few seconds and has a large but very temporary capacity. Short-term memory holds a limited amount of information for about 15 to 30 seconds without rehearsal. Long-term memory can store large amounts of information for long periods, potentially for a lifetime. - 3
A person looks up a phone number, repeats it silently while walking across the room, and then dials it. Identify the memory process being used and explain how it works.
Focus on the role of repetition over a short time span.
The person is using maintenance rehearsal in short-term or working memory. Repeating the number keeps it active long enough to use it, but the information may fade quickly if rehearsal stops and it is not encoded into long-term memory. - 4
Compare maintenance rehearsal and elaborative rehearsal. Which is generally more effective for long-term retention, and why?
Maintenance rehearsal involves repeating information without adding meaning, while elaborative rehearsal connects new information to existing knowledge, examples, images, or personal meaning. Elaborative rehearsal is generally more effective for long-term retention because deeper processing creates more retrieval pathways. - 5
A student studies a list of 20 vocabulary words. During the test, the student remembers the first few words and the last few words best. Identify this pattern and explain its two main components.
Consider how position in a list affects recall.
This pattern is the serial position effect. The primacy effect is better memory for items at the beginning of a list because they are more likely to receive rehearsal and enter long-term memory. The recency effect is better memory for items at the end of a list because they may still be active in short-term memory. - 6
Explain the difference between explicit memory and implicit memory. Give one example of each.
Explicit memory involves conscious recall of facts or experiences, such as remembering the date of a historical event or recalling a birthday party. Implicit memory influences behavior without conscious recall, such as knowing how to ride a bicycle or showing a conditioned response. - 7
Classify each memory type as episodic, semantic, or procedural: remembering your first day of school, knowing that Paris is the capital of France, and typing on a keyboard without looking at the keys.
Episodic means events, semantic means facts, and procedural means skills.
Remembering your first day of school is episodic memory because it is a personal event. Knowing that Paris is the capital of France is semantic memory because it is factual knowledge. Typing without looking at the keys is procedural memory because it is a learned skill. - 8
Describe the role of the hippocampus in memory. Explain what kind of memory difficulty is likely if the hippocampus is severely damaged.
The hippocampus is important for forming and consolidating new explicit memories, especially episodic memories. Severe hippocampal damage can cause anterograde amnesia, meaning the person has great difficulty forming new long-term explicit memories after the injury. - 9
Distinguish between anterograde amnesia and retrograde amnesia. Provide a brief example of each.
Use the direction of memory loss relative to the injury or event.
Anterograde amnesia is difficulty forming new memories after brain injury or illness, such as being unable to remember people met after an accident. Retrograde amnesia is loss of memories from before the injury or illness, such as being unable to remember events from the week before an accident. - 10
A witness to a minor car crash later hears another person say, 'The blue car ran the light.' The witness then reports seeing a blue car, even though the car was green. Explain this error using a memory concept.
This error can be explained by the misinformation effect. New misleading information after an event can alter a person's memory of the original event, especially when the person incorporates the suggestion into their recollection. - 11
Explain why eyewitness testimony can be unreliable even when the witness is confident.
Confidence and accuracy are related in some situations, but they are not the same thing.
Eyewitness testimony can be unreliable because memory is reconstructive rather than a perfect recording. Stress, attention, leading questions, stereotypes, source confusion, and post-event misinformation can change recall. Confidence can increase after feedback and does not always match accuracy. - 12
A researcher gives participants a list of words related to sleep, such as bed, rest, dream, pillow, and tired. Later, many participants falsely recall the word sleep, which was not on the list. Identify the paradigm or effect and explain what it demonstrates.
This is an example of the Deese-Roediger-McDermott, or DRM, false memory paradigm. It demonstrates that people can falsely remember related but nonpresented words because memory is influenced by meaning, associations, and gist rather than only exact details. - 13
Compare retrieval failure and memory decay as explanations for forgetting.
Ask whether the memory is unavailable or simply inaccessible.
Retrieval failure occurs when information is stored but cannot be accessed because the right cues are missing or interference is present. Memory decay suggests that memory traces weaken over time if they are not used or reactivated. Retrieval failure emphasizes access problems, while decay emphasizes weakening of stored information. - 14
A student studies psychology in the same quiet room where the exam will be taken and performs better than expected. Explain this result using context-dependent memory.
Context-dependent memory occurs when recall improves because the physical environment at retrieval matches the environment at encoding. The quiet room may provide cues that help the student access information learned in that same setting. - 15
Design a brief study strategy for long-term retention of a difficult chapter. Your strategy must include spacing, retrieval practice, and elaboration, and it must explain why each method helps memory.
Do not describe rereading only. Include active recall and meaningful connections.
An effective strategy would spread study sessions across several days, use practice questions or free recall during each session, and connect concepts to examples, prior knowledge, and diagrams. Spacing helps reduce forgetting and improves consolidation, retrieval practice strengthens access to the information, and elaboration creates meaningful connections that support long-term recall.