It has been disappointing in the last few days to see several references in the Star Tribune to the assertion that Barway Collins' father had "flunked" a "lie detector" test ("Child's body recovered in Barway search," April 12, and "Police call Barway's dad primary suspect in death," April 13). Not only is this prejudicial — publicly branding a potential defendant as a liar — but it badly misrepresents polygraphy.
A polygraph ("lie detector") does not detect lying per se; it detects physiological changes that reflect stress felt by the person being monitored. Seeing which questions provoke a stress response may provide clues that the operator may use to guide further questioning; an operator may suspect that a need to lie is the source of an observed stress response, but that's a subjective call by a questioner — not a fact detected by the machine. "Failing" or "passing" a polygraph examination is a soft concept at best.
This is recognized by the courts (including the U.S. Supreme Court since 1988): The results of a polygraph examination are neither specific nor reliable enough to be admissible as evidence of guilt in a criminal proceeding.
Why was this included in the article at all (or in the public announcement that led to the article)? Even if more accurately portrayed, it wouldn't add to the simple statement that the person denied involvement in the disappearance but has not been excluded as a suspect.
Dale Hammerschmidt, Minneapolis
U AND DRUG TRIALS
What must change: Heeding the pleas of family members
How do we go about improving future drug trials for vulnerable patients? As John Trepp ably demonstrated ("It's hard to cheer the outcome in the Markingson suicide case," April 14), factors such as corporate support of drug trials should be considered, for all practical purposes, unchangeable. However, one area does hold promise for beneficial change. That is the lack of serious consideration given at the University of Minnesota to Mary Weiss' urgent pleas that her son should not participate in such a study. In general, I believe that psychiatrists, no matter how knowledgeable, do not know their patients as well as family members do. If Weiss believed that Dan Markingson was suicidal, or likely to commit suicide if he continued in the trial, why didn't the psychiatrist listen? I maintain that, unlike the practice of psychologists, psychiatric practice emphasizes quantitative data over emotion. Perhaps Weiss' emotions prompted Dr. Stephen Olson to prioritize his expert opinion over a mother's gut feeling. If so, this mind-set needs to be addressed by the psychiatric profession before other mothers lose their sons.
Patricia Barone, Fridley
COLLEGE ATHLETES
They don't need to be paid — their sports need dialing down
Compensate student athletes? (Opinion Exchange, April 14.) The bottom line is that sports are overemphasized in college as well as in the pros. Scholarships are very high pay for some students. Yes, some coaches are overpaid, making them the highest-paid public employee in the vast majority of states. But the arguments that big-school, big-sport players spend "insanely long hours, miss multiple days of classes" and "sell their souls to their sport" are fine ones for sane de-emphasis, not for paying athletes. And we know that a large percentage of big-school, big-sport athletes, especially in the concussion sports, do not graduate.
Stop the silliness of discussing paying players; start the serious discussion about elevating sports to the level of extracurricular activities that don't disable players but help ready them for a good life: i.e., debate, student newspapers, yearbook and other media, chess, student government, theater, language clubs, choir, music, art and film activities, writing and volunteering, etc.
Not to mention school itself.