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<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=614124811-20092007>Dear all,</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=614124811-20092007>I was wondering whether someone could help this
lay-person who tries to programme the serial seven test in E-prime.
</SPAN></SPAN><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The task goes as
follows:</SPAN><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p></o:p></P></DIV>
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<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Serial
Sevens involves presenting a participant with a starting number from which they
must subtract 7, then subtract 7 from the resultant number and so on. A randomly
generated starting number between 800 and 999, which disappears at the first
key-press, is displayed on the monitor of a desktop computer.
Responses are made in the form of three-digit numbers, which are
recorded via the numeric keypad. Each key-press results in an asterisk being
displayed in the first, second or third position, as appropriate, in a box on
the screen. Pressing the ‘enter’ key signals the end of each response and clears
the three asterisks in the box ready for the next three-digit number. <SPAN
class=614124811-20092007>Duration ot the task: 2 minutes. </SPAN></SPAN><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The task is scored for both
total number of subtractions and number of errors. In the case of a mistake,
subsequent responses are scored as positive if they are correct in
relation to the new number.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=614124811-20092007>T</SPAN>his task is particularly difficult to design
because there are no set correct and incorrect answers, as this relies on the
previous response. However, I am sure that it is possible to programme E-prime
to determine whether an answer is correct based on a previous answer<SPAN
class=614124811-20092007>.... but how...?</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=614124811-20092007>Thank you very much in advance for your
responses,</SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=614124811-20092007>Nelly van der
Meer</SPAN></SPAN></P></DIV></DIV></BODY></HTML>