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Psychology half term Homework: Page 69 questions 1. a. Trace decay and interference theories are two explanations of forgetting in long term memory. Trace decay is the physical disappearance of a memory trace from the brain. Trace decay is one reason for forgetting. It should be distinguished from cue-dependent forgetting, in which the memory trace has not decayed but is hard to find. Interference is when one set of information competes with another, causing it to be 'overwritten' or physically destroyed. b. In Jacob's study participants were presented with a sequence of letters or digits, followed by serial recall (repeating letters in the same order). His findings were that short-term memory had a span of between 5 to 9 items. 2. a. Short-term memory has very limited duration and capacity whereas long term has unlimited capacity that lasts (potentially) forever. They differ in the way that information is encoded. Forgetting in short-term memory...

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