Chance orders of alternating stimuli in visual discrimination experiments

LW Gellermann - The journal of genetic psychology, 1933 - search.proquest.com
LW Gellermann
The journal of genetic psychology, 1933search.proquest.com
The first three of these criteria were intended to give well-balanced series in which the
formation of position habits would not be encouraged greatly. The fourth criterion was used
because of the possibility of differential cues in the change of stimuli from side to side in
some trials and not in others. With 5 reversals in each series of 10 responses, the stimuli
would be actually changed half the time, and altered but not changed the other half of the
time. The fifth criterion was chosen to minimize the subject's opportunity of making more than …
The first three of these criteria were intended to give well-balanced series in which the formation of position habits would not be encouraged greatly. The fourth criterion was used because of the possibility of differential cues in the change of stimuli from side to side in some trials and not in others. With 5 reversals in each series of 10 responses, the stimuli would be actually changed half the time, and altered but not changed the other half of the time. The fifth criterion was chosen to minimize the subject's opportunity of making more than 50% correct responses through habits of alternation which are relatively common in subjects in visual discrimination experi-ments. The 44 series which met these five criteria are as follows:
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