Ch. 6 Flashcards
_ is the process of using info that was obtained in the past to generate some cognitive function in the present
memory
Memory requires three fundamental components:
encoding
_
retrieval
storage
Encoding refers to the initial processing of info so that it is represented in the n_ s_
nervous system
If something is not encoded in the nervous system, then it can/not be remembered
cannot
Encoding can be in the form of short-term transduction of a physical stimulus into a neural code or a _ _ in the brain that encodes a fact or event about the world
structural change
Storage is the retention of _ info
encoded
_ refers to the brain’s ability to access stored info for some cognitive purpose. It depends on links in the chain of memory to function, otherwise items cannot be remembered
retrieval
Both human and _ memory require the same basic elements to function
computer
Putting info into long-term memory stores is _
encoding
Maintaining info in memory is _
storage
Re-activating and using previously learned info is called _
retrieval
To study memory, there are two dimensions that can be measured:
capacity
_
duration
How much info a memory system can hold is a dimension of memory called _
capacity
T or F: a limit has been observed in terms of the amount of more general info you can retain in long-term memory
false
the long-term memory is one helluva thing
We can measure how long info remains in memory, a property called _
duration
Imagine that you’re running a memory study and want to see how your participants’ memory capacity varies when they are in different moods. After inducing participants to feel different moods (happy, sad, or excited), you show them a series of words to recall later. Which of the following would be an appropriate measure of their memory capacity?
a. how happy, sad, or excited the participants feel on a 1-10 scale
b. the amount of time it took for participants to recite the shown words
c. the amount of time it took for participants to utter the first recalled word
d. a count of how many of the shown words they can recite
d. a count of how many of the shown words they can recite
_ articulated that two kinds of memory stores exist:
info relating to a current task or environment
longer-term storage
William James
Atkinson and Shriffrin’s 1968 study established the first substantial theoretical model of memory that attempted to account for experimental data: m_ m_of memory
multi modal model of memory (or multi-store)
In the multi store/modal model of memory, there are proposed 3 kinds with each its own capacity and _
duration
The modal model was created in a new era of _ science, likening our processing of info to encoding and storing info into a _ [same word]
computer
In the multi modal model, there is:
sensory input
sensory memory
short-term memory
…
long-term memory
In the multi modal model, there is:
sensory input
sensory memory (_ info is lost)
short-term memory
long-term memory
unattended
In the multi modal model, there is:
sensory input
sensory memory
short-term memory (requires attention and maintenance , otherwise un [form of 1st word] info is lost)
long-term memory
rehearsal; unrehearsed
In the multi modal model, there is:
sensory input
sensory memory
short-term memory
long-term memory (requires encoding; some info may be lost over time, and refers to … for retrieval)
short-term memory
Sensory memory has an approx duration of …
1 second
T or F: According to the modal model, most of the info in sensory memory is attended but it is lost quickly
false - most is unattended (we can’t attend to everything happening around us), so it is lost quickly
if most sensory memory was attended, we’d be a helluva lot smarter, and wouldn’t be prone to errors during eyewitness testimony, etc.
T or F: According to the multi modal model, Once info is encoded in short-term memory it can be retained for 15 - 30 seconds or even longer if it is _
rehearsed
_ memory is capable of producing a behavioural output, such as repeating a phone number someone has just told you or responding to a recall task
short-term memory
sensory memory does NOT have a behavioural output - it’s too busy dealing with everything that is being processed
Maintenance _ is the mental repetition of info in STM, which prolongs its duration
rehearsal
There is no agreed-upon method for measuring the capacity of …memory because only a fraction of …memory [different form] is encoded as … [1st word]
LTM;
STM;
LTM
It requires _ attention to process the meaning of words someone speaks to then possibly retain in STM
selective (like a filter)
What does the information processing, or modal, model explain?
a. where info is stored in the brain
b. how incoming input from the environment is conceptually stored in the mind
c. where different types of sensory, STM and LTM are stored separately in the brain
b. how incoming input from the environment is conceptually stored in the mind
Whatever you are thinking about right now is occupying your ______ memory.
a. sensory
b. STM
c. LTM
d. none of the above
b. STM
New information in our immediate awareness has not yet been encoded for permanent storage but we may be retrieving information from long-term memory to be thinking about right now.
What is the process that moves information from sensory memory into short-term memory?
a. attention
b. encoding
c. retrieval
a. attention
The initial transduction of sensory information, it is retained within our nervous system for a brief period, around _milliseconds
250
Sensory memory may actually be directly observed in action. For example, there is a phenomenon called the _ of _, in which you can directly see information that entered your eye moments ago
persistence of vision
Persistence of vision occurs because the _ of the object in one location is still present in our visual system after the object has moved to a different location
trace
e.g., you can see the ‘trace’ of a circle, etc. when you use a sparkler because our sensory memory captures those traces and in the dark it takes longer for them to dissipate because of the stark contrast
The thaumatrop was a popular source of entertainment in the 19th century consisting of a disk with different drawings on each side and when spun quickly would lead to the illusion of seeing both images at the same time. This is an example of the _ of _ phenomenon
persistence of vision
When LED lights are moved quickly through space, why does this produce a “spread out” pattern?
a. the high speed of the lights creates energy in the surrounding areas
b. the persistence of vision retains multiple positions of lights as they move through space
c. the LEDs are moving at a speed too fast for your brain to process and therefore partial info is lost
d. your LTM stores past info while your sensory memory is still processing it
b. the persistence of vision retains multiple positions of lights as they move through space
sensory memory’s refresh rate can create this illusion
Sperling (1960) provided subjects with up to 12 pieces of information (e.g., letters) and asked them to recall all that they saw. Subjects were typically able to recall nearly _% of the information
40%
Sperling (1960) conducted a series of well-known experiments in which participants were presented stimuli consisting of three rows of letters. In the whole-report condition, participants were presented with a grid of letters for a duration of between 15 and 500 milliseconds and were asked to report as many of the letters from the grid as they could. What Sperling found was that participants typically reported the letters from one of the rows, suggesting that the row that was available to report was based on…
which one they were paying attention to / attending
The ability to report the letters in Sperling’s rows of letters experiment, a behavioural output, depends on those items making their way into … using attention
into STM
Sperling referred to a high-capacity/short-duration form of visual memory as _ memory
iconic memory
based on the fact that the memory is something like a photographic image or icon; if you have photographic memory, it is likely to be of high capacity (high yield, etc.), but may not necessarily last very long
Other experiments using sound to remember, rather than Sperling’s letter grids, suggest that there is also an auditory form of sensory memory, called _ memory
echoic
“Hello……hello….helllo…!”
T or F: there are only two types of sensory memory
false - there may be more, but they are difficult to research experimentally
there may be tactile memory, even taste, but it’s hard to capture sensory vs short-term. But you can certainly remember tastes, textures, etc.
What is the duration of iconic memory?
a. 30 seconds
b. 1 second
c. 1 minute
d. 5 - 6 seconds
b. 1 second
Sperling’s partial report method illustrated that subject performance quickly decayed if there was a delay between stimulus exposure and the cue-tone
it is still a form of sensory memory, so it’s likely just as long - 1 second
According to the modal model of memory, …’s function is to hold information in place until it can be used for some behavioral task (such as entering the name of a website you just heard about), transferring information into LTM, or maintaining the information through rehearsal.
STM
In the auditory domain (e.g., remembering a list of numbers or names), it is generally agreed that STM can hold an average of _ items. In the visual domain it is agreed (not as unanimously) that it can hold around _ items. This suggests that the auditory domain is more stable than the visual domain.
seven;
four
auditory info seems to be more stable than visual
Miller calls the capacity limit to remember items as “The magical number _ plus or minus _”
seven;
two
Research has found that a person’s capacity to remember quantities of info remains stable across multiple tests, and even over many years, and thus appears to be a fixed feature of a person’s brain. Those who can remember a lot are considered -, and those who cannot are considered of -
high-capacity (up to 9)
low-capacity (down to 5)
We can remember in STM meaningful information by way of _, whether letters, numbers or sounds that constitute a meaningful whole
chunks
The capacity to chunk info into larger units depends on engaging _TM
LTM, where patterns of previously encountered items are stored
that’s why chess players have better memory when presented with items on a chessboard; they can utilize their LTM to remember where items are, as opposed to novices who may not be familiar with particular plays, etc.
T or F: According to Miller, once a combo of items is matched to memory, it needs to be represented as separate items
false
if it’s already matched in chunks, why repeat work? it’s already applied and encoded
A capacity limit has been found for _ STM (_STM)
visual STM (VSTM)
we can only remember so many details from someone walking down the street; it is only the attended ones that are remembered, of which there are still less that are usually remembered (3 to 5)
VSTM (visual short-term memory) is typically measured using a _-detection task
change
In Luck and Vogel’s 1997 study, they had participants presented with a screen with several objects, such as colored squares. This screen disappears and a new one is shown, which may be identical to the original or have some property changed. When the number of items in the set is less than 4, performance is nearly perfect but after four items, it begins to decline rapidly with the number of items in the set. Using this kind of task, researchers have concluded that _ has a capacity of three to five items
VSTM
Luck and Vogel (1997) established the visual short term memory (VSTM) as having a capacity of _ to _ items
3 to 5
Luck and Vogel (1997) used a paradigm reminiscent of _ _ in order to test visual memory. Once the number of objects increased to greater than five, memory performance rapidly dropped off
change blindness
In the case of visual stimuli, people can remember _ visual objects, even if each object has multiple features, such as a shape, a colour, and an orientation. In this case, remembering four objects would consist of remembering 12 features (Wheeler & Treisman, 2002)
4 visual objects;
12 features (3 features per object - 3 x 4 = 12)
Inoue and Matsuzawa (2007) provided chimpanzees and human participants with five digits that appeared on a screen from 210 milliseconds up to 650 milliseconds. After that wait period, the digits disappeared and were replaced by blank squares. The subject (whether human or chimp) was tasked with… to reveal the digits in numerical order.
touching the squares
Inoue and Matsuzawa (2007) provided chimpanzees and human participants with five digits that appeared on a screen from 210 milliseconds up to 650 milliseconds. After that wait period, the digits disappeared and were replaced by blank squares. The subject (whether human or chimp) was tasked with touching the squares to reveal the digits in numerical order. On average, most humans’ memory performance for the five digits decreased when the presentation time dipped below 400 milliseconds. However, some chimpanzees were …
able to retain them, and in half the time!
On how many trials was Ayumu the Chimp able to correctly remember the order of the numbers?
a. nearly 10% of the trials
b. a third of the time
c. nearly 90% of the trials
d. all of the trials
c. nearly 90% of the trials
Professional _ists are capable of forming long chunks of data into memory, rather than having an enhanced memory capacity
mnemonists
mnemonnics - using new names , stories, etc. as reminder of data to be remembered)
Competitors in the World Memory, Mental Calculation and Speed Reading Organization are said to have great …, rather than enhanced memory capacity
memory tricks, such as mnemonics
Chase and Simon (1973) examined the effect of expertise in the _ domain, comparing chess experts’ and novices’ ability to memorize configs of chess pieces on a chess board
visual
Chase and Simon (1973) examined the effect of expertise in the visual domain, comparing chess experts’ and novices’ ability to memorize configs of chess pieces on a chess board. They found that chess experts were able to remember the positions of around _ pieces while the novices could only remember four. These results were four times higher than the established amount for standard VSTM (i.e., 4)!
16
four times the standard VSTM!