Cognitive Psychology Flashcards
Hermann Ebbinghaus
First modern researcher of memory in late 1800s. Used self as a subject to study memory with nonsense syllables.
Edward Titchener
Early structuralist who used introspection to identify forms of consciousness. Trained by Wundt.
Structuralism
Goal is to break consciousness down into its elements/specific mental structures.
Noam Chomsky
Linguist who critiqued BF Skinner saying that speech could not be due to reinforcement due to the creative ways it is used.
Three Research Methods in CogSci
Reaction Time
Eye Movements
Brain Imaging
Method of Savings
Method used by Ebbinghaus. After memorizing the list and then distracting himself, he would see how many times he had to read the list to re-memorize it (assuming the faster he re-memorized it, the more he had remembered).
The Forgetting Curve
Designed by Ebbinghaus. Essentially the curve suggests that we rapidly forget things over the first five days, and then we plateau and forget at a much lesser rate after that.
Mental Processes of Memory
Encoding: putting info into memory
Storage: retaining info in memory
Retrieval: recovering info in memory
Two Methods of Retrieval
Recall: Independently reproducing information you were previously exposed to.
Recognition: Realizing that certain stimulus in is one you have seen before.
The Generation-Recognition Model
Recall task taps the same basic process of retrieval as a recognition task uses.
HOWEVER- recall required the additional step of generating the information rather than just recognizing it.
Clustering
When asked to recall lists, we tend to recall words belonging to the same categories.
Order Effects
Primacy and Recency
Stage Theory of Memory
Asserts that there are several different memory systems and that each system has a different function. Supposes that memory enters each system in a specific order: sensory memory, short term memory (i.e. working memory), and long term memory.
Sensory Memory
Fleeting impressions of sensory stimuli which lasts at most a few seconds.
Types of Sensory Memory
Visual = iconic Auditory = echoic
Whole-Report Procedure
Method used in early memory research to determine what information could be contained in sensory memory. Participants were presented with 9 items on a grid, and researchers presented it quickly then asked what they remembered (usually only about 3-4 items)
Partial Report Procedure
Devised by George Sperling (based off of the whole report procedure) where he asked participants to report a single row of the 9x9 grid (he told them which row after presentation). Recall was nearly perfect- suggesting they had remembered all on the grid. Later this was tried with larger grids, but subjects failed suggesting a 9 item limit.
The reason this worked was that in the whole report procedure, memory decayed quickly for everything, but in the partial report procedure they knew which row to remember before it decayed.
Short Term Memory
If not using short term memory- items remain there for about 20 seconds. However often the information here is rehearsed, and can stay in short term memory for a long time.
Maintenance Rehearsal
When information is rehearsed to remain in long term memory (like repeating a phone number in your head).
How much is kept in Working Memory
7+/-2 chunks of information (determined by George Miller)
Long Term Memory
The ‘permanent’ storehouse of experiences, knowledge and skills.
Elaborative Rehearsal
Organizing the information and associating it with information already in long term memory. Used to move the information from working memory to long term memory.
Types of Long Term Memory
Procedural: remembering how things are done (i.e. typing).
Declarative: remembering explicitly information (i.e. fact memory).
Types of Declarative Memory
Semantic: remembering general knowledge (word meanings, concepts, etc)
Episodic: remembering particular events/episodes you’ve experienced.
Encoding (Short Term v Long Term)
When we remember items, we use different formats. For example, encoding verbal material in short term tends to be phonological, and in long term tends to be meaning based.