in partial fulfil]ment of the - MSpace - University of Manitoba

Chapter '11
CONCTUSiON
This study showed that the 1O-second Test was significantly influenced
by subject, day and order effects and also by subject-day interaction
while only subject and day significantly influenced Thornton's
(1977 ) nDef when both tests were performed by adults. The variability
in test scores between subjects, days, and trials was greater for the
'1O-Second
Test than for Thornton's Test. There was, however, a similar
pattern in the response of subjects to Thornton's and the 1O-Second
Test, which might suggest a relationship between these two tests. That
is, decreases in test times for Thornton's Test from day-I to day-V was
followed by similar decreases in the 1O-Second Test.
The probabil-ity of perceiving the purkinje shift was observed to
increase and decrease at intervals during the process of dark adaptation.
This observation appears to suggest that there rvas a fluctuation
in the perception of the purkinje shift. However, the periodical
increases and decreases in perception did not appear to occur at fixed
intervals as the time intervals between each two adjacent peaks were
differen! from each other. Whether or not the responses of subjects !o
the purkinje shift had a cyclical nature could not be determined statistically
due to number of repetilions of correct and incorrect responses
Èo the purkinje shift.
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