Attribute value access

[leisha]

I am experiencing a type mismatch error from reading your message. First
you say that you have an attribute name in the BlockList, then you say
that it's a value that you wish to calculate. Are you talking about the
same variable? Your variable can be a string or a number. It's easier to
calculate numbers than strings. You have to use the correct syntax for
each one. To display a string on the screen, you have to get the
attribute and save it to a different name first, so I see a few ways
that you could be generating a type mismatch error.

I've had luck with invoking various conditions based on subject number,
although I've since been advised of a better way to do it through this
group. I've also had luck with nesting variables -- for example, in a
Verplanken-style experiment where polar adjectives (good/bad,
like/dislike) appear in random order and their position on the screen
(right or left) is random, also. The discussion beginning on page 44 of
the User's Guide Version 1 was especially helpful to me -- "Use of
nested lists passed from the block level."

Leisha Wharfield
Production Coordinator
Decision Research
Eugene, Oregon, USA
leisha at decisionresearch.org
www.decisionresearch.org

Gary Klatsky wrote:

> In my experiment I have an attribute in the BlockList that determines
> which attribute in the trial list is used based on subject number. The
> values in the BlockList are the attribute names in the trial list.
> This works without any problems.  The problem I am having is accessing
> the attribute value in the trial list.  I am writing a script that
> displays that value in the feedback display. Since the attribute name
> varies across subjects I want to access it from the attribute in the
> BlockList. However when I try any calculations of that value I keep
> getting a type mismatch error. Anyone have any experience with
> accessing second order attribute values?
>
>
>
> Thanks in advance
>
>
>
>
>
> Gary J. Klatsky, Ph. D.
>
> Director, Human Computer Interaction M.A. Program
>
>
>
> Department of Psychology                klatsky at oswego.edu
>
> Oswego State University (SUNY)       http://www.oswego.edu/~klatsky
>
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