Here Is a Study Modeled After That of John B

Here is a study modeled after that of John B. Watson (1907). Three groups of rats were taught a complicated maze. Afterward the rats relearned the maze. For one group, sight was eliminated (they were run in the dark). For a second group, their vibrissae were removed. For a third group the maze was rotated on its table. The time required to run the maze was recorded. Group means, an ANOVA summary table, and some HSD test values are shown below. Write an interpretation of the results. $\begin{array}{ll}\text { Dark } & 90 \text { seconds } \\\text { Vibrissaeless } & 110 \text { seconds } \\\text { Rotated } & 135 \text { seconds }\end{array}$

$\begin{array}{lccc}{\text { Source }} & d f & M S & F \\\text { Conditions } & 2 & 338.89 & 5.62 \\\text { Error } & 11^{*} & 60.30 &\end{array}$


$\begin{array}{cc}\hline \text { Dark vs. Vibrissaeless } & \text { Rotated vs. Vibrissae less } \\H S D=3.78&H S D=3.60 \\\quad\quad\quad\quad\quad\text { Rotated vs. Dark } \\\quad\quad\quad\quad\quad H S D=4.25\end{array}$

*Watson was often deservedly criticized for the small number of subjects in his research.