Chapter 7 Flashcards
What are the three processes of memory?
- -encoding: forming a memory code/taking information in (usually requires attention). Turning stimulus information (environmental information) into a form (a code) that can be stored in our memory system. (visual, self-referent)
- -storage: maintaining encoded information in memory over time. Include short-term and long-term storage.
- -retrieval: recovering information from memory stores. Can be a conscious act, or it can be automatic (name, place, or a fact, etc)
What is attention?
- -involves focusing awareness on a narrowed range of stimuli or events
- -likened to a filter that screens out most potential stimuli while allowing a select few to pass through into conscious awareness
- -cocktail party phenomenon: You’re at a party trying to focus on the person you’re talking to and filtering at all the surrounding conversations. Someone else around you says your name and you notice it. This suggests that this filter involves late selection rather than early selection.
- -However, the location of the attention filter may be flexible rather than fixed
What is the levels-of-processing theory?
- -proposes that deeper levels of processing result in longer-lasting memory codes
- -three progressively deeper levels of processes
1) structural encoding: relatively shallow processing that emphasizes the physical structure of the stimulus
2) phonemic encoding: emphasizes what a word sounds like and involves naming or saying the stimulus/word
3) semantic encoding: emphasizes the meaning of verbal input and it involves thinking about the objects and actions the words represent (elaboration encoding)
What is elaboration encoding?
- -semantic encoding can be enhanced through this process
- -elaboration is linking a stimulus to other information at the time of encoding
What is visual imagery coding?
- -imagery: the creation of visual images to represent the words to be remembered can be used to enrich encoding
- -ease of image formation affects memory
What is dual coding theory?
- -memory is enhanced by forming semantic and visual codes, since either can lead to recall
- -According to Paivio, imagery facilitates memory because it provides a second kind of memory code, and two codes are better than one
What is self-referent encoding?
- -involves deciding how or whether information is personally relevant
- -making material personally relevant can also enrich encoding
What is the Atkinson and Shiffrin model of memory storage?
–according to this model, incoming information passes through two temporary storage buffers -the sensory memory and the short-term memory- before it is transferred into long-term memory
What is sensory memory?
–preserves information in its original sensory form for a brief time, usually only a fraction of a second
–ex. afterimages: the sensory memory preserves the sensory image long enough for you to perceive it after the stimulus is gone
–purpose: gives you additional time to recognize stimuli and retain the stimulus long enough for it to be encoded in short-term memory
–The information that is being held within our
Sensory Memory appears to be unprocessed (not making any sense of it. It has to be processed for it to move to short term memory -sperling)
What is short-term memory?
- -STM is a limited capacity store that can maintain unrehearsed information for up to about 20 seconds
- -you can maintain information in your short-term memory indefinitely by engaging in rehearsal (working memory)
- —>maintenance rehearsal: simply maintaining the information in your consciousness
- —>elaborative rehearsal: increasing the probability that you will retain the information in the future (ex. focusing on the meaning of the words in the list you are trying to remember)
What is working memory?
- -a limited capacity storage system (STM) that temporarily maintains and stores information by providing an interface between perception, memory, and action
- -in order to maintain information within our short-term memory, we need to engage in “rehearsal.”
- -Rehearsal is the process by which the information is maintained within short-term memory long enough for it to be translated into long-term memory
- -ex. singing a phone number over and over again when someone tells you it so you can keep it in your short term memory long enough to write it down
- -This rehearsal requires the use of our Long- Term Memory – we need to be able to name the items that are being rehearsed – therefore we need to recall the names.
- -You’re given a list of letters to remember. When you first look at the letters, you went into your long-term memory to associate the symbol/letter with the name (the symbol T is…) in order to put it in your short-term memory. You then repeat the names you retrieved from your long-term memory in order to store it in your short term memory (you’re not remembering the visual field). If you’re shown letters from a different alphabet system of a different language that you don’t know, you won’t be able to do the same retrieval process because you don’t know the names of those letters in order to rehearse it and keep it in your short term memory long enough. This shows that rehearsal requires active retrieval of information from our long-term memory
What are the different types of working memory?
Alan Baddeley: Working Memory has four components
- -phonological loop: reciting something over and over again. Briefly stores the “sounds” of language
- -visuospatial sketchpad: temporarily hold and manipulate visual images (ex. imagining how you’ll rearrange your room)
- -episodic buffer: allows the various components of working memory to integrate information and that serves as an interface between working memory and long-term memory and holds it while we are working with it
- -central executive system: the “processor” that focuses our attention (controlling what we are thinking about in our working memory) and coordinates the actions of the other three components. Making use of phonological loop, visuo-spatial sketch pad, episodic buffer. This is the part that is doing the working of working memory
What is working memory capacity?
- -refers to one’s ability to hold and manipulate information in conscious attention (how well someone can juggle information in their working memory while fending off distractions)
- -WMC is a stable personal trait that is influenced by heredity, but it can temporarily be reduced by situational factors, such as pressure to perform or rumination
- -high-WMC individuals tend to let their mind wander from the task more than low-WMC individuals when the attentional demands of the task are low, but they are also better at staying focused when they need to do so
- -WMC correlates positively with measures of high high-level cognitive abilities, such as reading comprehension, complex reasoning, and even intelligence
What is long-term memory?
–an unlimited capacity store that can hold information over lengthy periods of time
What are flashbulb memories?
- -unusually vivid and detailed recollections of momentous events (ex. remembering exactly where you were, what you were doing, and how you felt when you learned of the death of a loved one)
- -however, like other memories, they become less detailed and complete with time and are often inaccurate so it does not support the idea that long-term memory storage is permanent
- -rather, what makes them special is that people subjectively feel that these memories are exceptionally vivid and they have exceptional confidence in their memories’ accuracy
What is clustering?
- -the tendency to remember similar or related items in groups
- -factual information is routinely organized into simple categories
What is a conceptual hierarchy?
- -a multilevel classification system based on common properties among items
- -this can improve recall dramatically
What is a schema?
- -an organized cluster of knowledge about a particular object or event abstracted from previous experience with the object or event
- -ex. asking people to recall what was in their therapists’ office, most subjects recalled the desks or chairs, but few recalled the wine bottle or picnic basket, which typically aren’t part of an office. Some subjects falsely recalled that the office contained books
- -this suggests that people are more likely to remember things that are consistent with their schemas than things that are not
- -however, the opposite can be true: people are able to better recall things that violate their schema-based expectations. Information that really clashes with a schema may attract more attention and deeper processing, thus becoming more memorable
What is a semantic network?
- -consists of nodes representing concepts, joined together by pathways that link the related concepts
- -proven useful in explaining why thinking of one word, such as butter, can make a closely related word, such as bread, easier to remember
- -spreading activation: when people think about a word, their thoughts naturally go to related words along pathways of the semantic network surrounding the word. The strength of this activation decreases as it travels outward (like how ripples decrease in size as they radiate outward from a rock)
What is the connectionist or parallel distributed processing (PDP)
- -assumes that cognitive processes depend on patterns of activation in highly interconnected computational networks that resemble neural networks
- -A PDP consists of a large network of interconnected nodes that may be inactive, or send excitatory or inhibitory signals to other units. A nodes level of activation reflects the weighted balance of excitatory and inhibitory inputs from many other units
- -PDP models assert that specific memories correspond to particular patterns of activation in these networks
- -in semantic networks, specific nodes represent specific concepts but in PDP, a piece of knowledge is represented by a particular pattern of activation across an entire network. The information relies on the strength of the connections, which is why the PDP approach is called connectionism
What is the tip-of-the-tongue phenomenon?
- -the temporary inability to remember something you know, accompanied by a feeling that it’s just out of reach
- -occurrence increases with age
- -memories can be jogged with retrieval cues: stimuli that help gain access to memories
How can context help with memory retrieval?
–when you put yourself back in the context in which something occurred, context cues aid retrieval
What is the misinformation effect?
- -occurs when participants’ recall of an event they witnessed is altered by introducing misleading post-event information
- -ex, participants watched two cars crash. Some subjects were asked after how fast the cars were going when they smashed together, and other subjects were asked how fast the cars were going when they hit each other. A week later, they asked the participants if they remembered seeing any glass when the cars crashed. The ones that were asked how fast the cars were going when they smashed together were more likely to recall broken glass even though there wasn’t any. This is because broken glass is consistent with their schemas for cars smashing together
- -this effect is so difficult to escape that even the ones who have been warned about this can be swayed by post-event information
What is source monitoring?
- -the processes of making inferences about the origins f memories
- -the misinformation effect appears to be due to the unreliability of source monitoring
- -memories are not tagged with labels that specify their sources so when people pull up a specific memory, they have to make decisions at the time of retrieval about where the memories came from
- -source-monitoring error: occurs when a memory derived from one source is misattributed to another source
What is forgetting and why is it important?
- -caused by defects in encoding, storage, retrieval, or some combination of these processes
- -your memory would be very cluttered if you never forgot anything so we need to forget information that is no longer relevant
- -Hermann Ebbinghaus, who memorized a bunch of meaningless letters, concluded that most forgetting occurs immediately after learning, however when people memorize more meaningful things, the forgetting curve is less steep