The Finger to Nose test is a standard field sobriety test that is considered
scientifically questionable in determining alcohol impairment, yet it is
commonly given by Massachusetts police in DUI stops. Correlation between being
able to perform this test and being driving impaired is little better than
chance..
You also administered a finger to nose exercise?
During the finger to nose, you had him close his eyes?
When you had him close his eyes, you cut off any visual balancing
ability?
You also told him to tilt his head back?
When you told him to tilt his head back, you disrupted the vestibular
system, or fluid, in his inner ear?
Let me make sure I understand this, you told him to close his eyes, tilt
his head back, and you noticed sway?
You cut off the two systems by which the body maintains balance and you
noticed sway?
The finger to nose has never been validated by NHTSA as a reliable
indicator of blood alcohol concentration, has it?
Would you have a basis to disagree that, according to NHTSA scientific
research, the finger to nose has been shown to have a 50% correlation to a
blood alcohol concentration of 1.0 or greater?
You could toss a coin with a guaranteed predictive validity of 50%,
couldn't you?
Heads he's sober - tails he's drunk?
He was able to put his heels together.
He was able to tilt his feet out at a 45-degree angle.
You asked him to shut his eyes and he shut his eyes.
You asked him to tilt his head back and he tilted his head back.
You asked him to put his arms out and he put his arms out.
