Heads Up/Heads Down Data Sheet Page 2

Analysis of Data:

7. Use the formula given below to calculate the cognitive index for each test subject's score. The cognitive index allows you to combine the scores for speed and accuracy into one score. The formula to use for calculating the cognitive index is:

Cognitive index (CI) = (1 + % wrong) x ( time (sec))

8. Enter the scores for each test subject into the table below.

9. Calculate and enter the average for the scores from the whole class on the bottom row of the table below.

 

Table #4

Cognitive Index for Test subjects

	E Search Test			CM Test
Subject's Name	Control Seated	Bed Rest Lying	Recovery Seated	Control Seated	Bed Rest Lying	Recovery Seated
Class Score Average

Heads Up/Heads Down Data Sheet Page 3

Conclusion - Answer the following questions.

1. How did your subject's cognitive index scores compare before, during, and after the period of bed rest?

2. How did the class average scores compare before, during, and after the bed rest period?

3. Why would lying down with your feet up affect your performance?

4. Should you do your homework with your feet up? Why or why not?