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PSY100Y5 (809)
Dax Urbszat (681)

Lab5-Recall & Recognition Memory

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Dax Urbszat

PSY100Y5 Introduction to Psychology - Summer 2011 LAB 5: Recall & Recognition Memory with Signal Detection Analysis TERMINOLOGY: 1) Sensory memory, short term memory (STM), long term memory (LTM) 2) Measuring LTM; Ebbinghaus Relearning, Recall (%) and Recognition (Hits and False Alarms) 3) Serial Position effects and Primacy (from LTM) and Recency (from STM) 4) Encoding, Storage, and Retrieval – organization and mnemonics 5) Statistics – Normal Distribution – Mean, Standard Deviation (Labtest1 scores) 6) Signal Detection Analysis – same as that used in perceptual threshold studies (seen in Lab 2) 7) Signal Detection measures pure memory strength (d’, known as Recognizability) as it is separated from decision criteria. (d’ takes into account both Hits, and False Alarms) TWO EXPERIMENT TASKS – are examples to help you design your own experiment which you will run and write up as a LAB REPORT with a PARTNER due after Reading Week. START NOW and come up with 5 or more ideas for IVs by the end of January to be ready for Lab 8 in February. You will need to have two IVs (in a 2x2 design = 4 conditions) and run at least 8 people. Get your design approved during Lab 8. It cannot be approved by email or outside of lab times. You will need to keep all of your rough drafts and materials available until the end of the year (in case there are academic offenses we have to deal with). 1) RECALL TASK and the effects of elaborative encoding (Repetition vs. Visualization) 2) PICTURE RECOGNITION TASK and the effects of semantic categories (Organized vs. Unorganized) What is the effect of X on Y while controlling for Z? RECALL (two LISTS of 20 words seen for 6 seconds each) IV = type of rehearsal (repetition vs. elaboration) DV = free recall percent correct (not looking at serial order effects today) CV = all common words, 6 seconds of study time, 30 seconds of delay before recall HYPOTHESIS – Percent correct for Visualization rehearsal should be much higher than for Repetition rehearsal. Why? RECOGNITION (study two sets of 40 pictures, and test with 80, some OLD and some NEW) IV = whether pictures are organized by categories or in miscellaneous groups (Animal, Clothing, Fruit and Vegetables, and Kitchen Utensils) DV = hit rate, false alarm rate, and recognizability (d’) CV = pictures are everyday common objects, old and new
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