An Experimental Neuropsychologist Wishes to Determine Whether a New Drug

question 1

Multiple Choice

An experimental neuropsychologist wishes to determine whether a new drug (X-9) enhances the growth of new, functional brain tissue after maximal brain growth has already been attained after a period of 1 month and 6 months. Five rats were run in a series of three different mazes. All of the mazes were judged to be of equal difficulty. The time in seconds to solve each maze is recorded for each rat across its three mazes. X-9 was given 2 weeks before testing. A prior study statistically demonstrated that rats not given X-9 did not improve their times. Is there any evidence X-9 works? $\begin{array} { l c c c c c c } \hline & { \text { 1 Month } } & & & \text { 6 Months } \\\hline & \text { Trial 1 } & \text { Trial 2 } & \text { Trial 3 } & \text { Trial 1 } & \text { Trial 2 } & \text { Trial 3 } \\\hline \text { Rat 1 } & 10 & 12 & 5 & 4 & 5 & 4 \\\text { Rat 2 } & 15 & 14 & 8 & 6 & 5 & 4 \\\text { Rat 3 } & 14 & 14 & 7 & 6 & 7 & 7 \\\text { Rat 4 } & 9 & 10 & 5 & 7 & 8 & 8 \\\text { Rat 5 } & 12 & 11 & 4 & 7 & 6 & 7 \\\hline\end{array}$
-The SST is

• A)324.967
• B)1936.033
• C)116.033
• D)64.067
• E)68.467

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Definitions:

Dollar Cost Averaging

An investment strategy that involves regularly investing a fixed amount of money, regardless of the share price, to reduce the impact of volatility.

Framing Error

A cognitive bias involving the presentation or "framing" of information in a way that influences decision making or perception.

Satisficing

The process of choosing an adequate solution that meets minimum criteria, often used in decision-making when an optimal solution is unfeasible.

Overconfidence

The state of being overly convinced of one's abilities or correctness, often without sufficient reason or justification.