Dennis-
Recently you said:
"The study is now a true double-blind (Did I miss
something?), but the control condition allows for more than one
interpretation of any differences observed."
The possibility of mulitiple interpretations _always_ exists regardless
of level of control. Even if you
At 5:43 PM -0400 8/11/99, Rick Adams wrote:
Jim wrote:
Wouldn't this only be true of DRUG studies? Presumably doctors
performing operations know which one they are doing? I don't
think the problem of double-blind studies for many treatments is
unique to psychology.
Two points:
Hi Tipsters -
I would also suggest an actual control condition in addition to the placebo
condition.
Diana Kyle
Fullerton College
Don Allen wrote:
Dennis-
Recently you said:
"The study is now a true double-blind (Did I miss
something?), but the control condition allows for more than one
Comments on some of the interesting points raised in response to my
proposed double-blind test of psychotherapy:
On Wed, 11 Aug 1999, Don Allen wrote:
Not quite double blind, but very very close. You would also have to
ensure that the therapists were equally convinced of the effectiveness
Rick Adams wrote:
"Some forms of alternative medicine don't lend themselves well
to a rigid double-blind research approach (to use a psychological
anology, try designing a double blind experiment to demonstrate
the efficacy of cognitive therapy...
Nothing like a little
Stephen-
Not quite double blind, but very very close. You would also have to
ensure that the therapists were equally convinced of the effectiveness of
their treatments otherwise differential experimenter enthusiasm could
affect the Ss responses. That quibble aside, I agree that it would be
At 8:34 AM -0700 8/11/99, Don Allen wrote:
Stephen-
Not quite double blind, but very very close. You would also have to
ensure that the therapists were equally convinced of the effectiveness of
their treatments otherwise differential experimenter enthusiasm could
affect the Ss responses. That
Hi
On Wed, 11 Aug 1999, Rick Adams wrote:
Stephen Black wrote:
Randomly assign subjects to either placebo therapy or cognitive
therapy. So far, we have single-blind (subjects don't know which is
the placebo). To make it double blind, have the outcome measures
taken by independent
Rick Adams
Stephen Black wrote:
Bingo, double-blind study. QED.
Except that, since the experimenters themselves would
know if they were administering the placebo therapy or not,
their interactions with the subjects could be compromised
by the knowledge and the results skewed.
Rick Adams wrote:
The alternative treatments approach, on the other hand, would not be
testing the specific therapy alone, but would instead be comparing it to
another known therapeutic system--a very different kind of experiment.
... I'll stick to my premise that in
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