-NERVOUS SYSTEM PRACTICAL 6

Question 1

1) Reaction Time Investigated Ruler Drop

Answer 1

Experimenter holds a metre ruler from the end

Question 2

2) Reaction Time Investigated Ruler Drop

Answer 2

Subject has their finger and thumb a small distance apart either side of ruler on the 50 cm line

Question 3

3) Reaction Time Investigated Ruler Drop

Answer 3

Experimenter lets go of the ruler and subject has to trap it

Question 4

4) Reaction Time Investigated Ruler Drop

Answer 4

Distance the ruler travels from the 50 cm line is noted

Question 5

5) Reaction Time Investigated Ruler Drop

Answer 5

Experiment is repeated on subjects that have just drink coffee or cola and subjects that have not

Question 6

Considerations Mistakes And Errors

Answer 6

Very difficult to control the variables in this experiment. To obtain reliable results large numbers of subjects need to be tested and averages taken

Question 7

Variables

Answer 7

Independant variable is whether the subject has taken caffeine or not. Dependant variable is the distance that the ruler travels. Control variables are the Age, Sex and Mass of the subjects