Three Groups of Rats Acquire a Memory on Day 1

question 157

Multiple Choice

Three groups of rats acquire a memory on Day 1. On Day 2, rats in Group 1 are given a drug which prevents initial long-term storage while they are actively retrieving the memory. Rats in Group 2 receive the drug but do not engage in memory retrieval. Rats in Group 3 actively retrieve the memory, and are shocked six hours later when they are not engaged in retrieval. On Day 3, all three groups are assessed. Which will show the greatest impairments in memory?

• A)Group 1
• B)Group 2
• C)Group 3
• D)Groups 1 and 2

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Definitions:

Normally Distributed

A statistical distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Normal Curve

A symmetrical bell-shaped curve that represents the distribution of a set of data, where most occurrences take place around the mean.

Asymptotic

The quality of the normal curve such that the tails never touch the horizontal axis.