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π Quick Study Guide: Iconic & Echoic Memory
- ποΈ Iconic Memory: This is our visual sensory memory. Think of it as a fleeting mental snapshot.
- β³ It's incredibly brief, lasting less than 1 second (typically around 0.25-0.5 seconds).
- π‘ It has a very large capacity, capable of holding a vast amount of visual information, even if we're not consciously aware of it all.
- π§ͺ George Sperling's classic experiment (using partial report technique) famously demonstrated its existence and capacity.
- π Echoic Memory: This is our auditory sensory memory. It's like a temporary "echo" of sounds.
- β±οΈ It lasts slightly longer than iconic memory, typically around 2-4 seconds. This allows us to process spoken words and understand sentences.
- π Like iconic memory, it also has a large capacity for auditory information.
- π§ Both iconic and echoic memory are crucial components of sensory memory, the very first stage of the Atkinson-Shiffrin model of memory.
- π― They act as a buffer, holding raw sensory information just long enough for us to select what's important to transfer to short-term (working) memory.
π Practice Quiz: Test Your Knowledge!
1. Which type of memory holds visual information for a very brief moment, often described as a fleeting mental snapshot?
- Short-term memory
- Iconic memory
- Echoic memory
- Long-term memory
2. George Sperling's classic experiment, which involved flashing letters on a screen and asking participants to recall them, primarily demonstrated the existence and capacity of what?
- Iconic memory
- Echoic memory
- Procedural memory
- Semantic memory
3. Approximately how long does echoic memory typically last, allowing us to process spoken language and understand sentences?
- Less than 1 second
- Up to 10 seconds
- 2-4 seconds
- Indefinitely
4. A student momentarily sees a bright flash of lightning during a storm and retains the visual image for a fraction of a second before it fades. This phenomenon is best explained by which type of memory?
- Iconic memory
- Flashbulb memory
- Implicit memory
- Echoic memory
5. Which statement accurately describes a shared characteristic of both iconic and echoic memory?
- They are both components of short-term memory.
- They have a limited capacity for information.
- They primarily involve conscious, effortful processing.
- They are types of sensory memory that precede conscious awareness.
6. You are listening to a friend speak, and for a brief moment, you can "replay" the last few words in your mind even if you weren't fully paying attention. This ability is primarily attributed to what?
- Semantic memory
- Echoic memory
- Episodic memory
- Procedural memory
7. Compared to short-term memory, iconic and echoic memory typically have a:
- Larger capacity but shorter duration.
- Smaller capacity but longer duration.
- Similar capacity and duration.
- Completely different processing mechanism.
Click to see Answers
1. B - Iconic memory
2. A - Iconic memory
3. C - 2-4 seconds
4. A - Iconic memory
5. D - They are types of sensory memory that precede conscious awareness.
6. B - Echoic memory
7. A - Larger capacity but shorter duration.
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