Experimental Psychology PSY 433

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Experimental Psychology PSY 433 Chapter 10 Memory

Amnesics Amnesia affects explicit long-term memory, not working memory or implicit memory. Explicit – conscious recall of episodic information Implicit – unconscious and automatic processing Impaired – memory for details of one’s past, ability to form new memories. Spared – recognition, semantic knowledge (facts), procedural memory (skills), priming.

2 x 2 Designs Revisited Warrington and Weiskrantz example Two IVs: 2 (implicit vs explicit) x 2 (amnesic vs norm) Explicit task was to memorize 24 words & then free recall Implicit task was to look at 24 words & then try to identify a degraded version of each of the 24 words.

A

B These are the actual results Warrington and Weiskrantz obtained

C

D

Adding a Third IV 2 (test) x 2 (subj) x 2 (LOP task): Memory test (explicit = free recall / implicit = word fragment completion) Subject (amnesic / normal) L.O.P. Task (graphemic = count vowels / semantic = use word in a sentence) 3 potential main effects 3 potential 2-way interactions 1 potential 3-way (higher-order) interaction.