Re: Forced choice (a or b) locus of control scale-ordinal or interval?
Posted by
Basia on
Oct 01, 2014; 1:21pm
URL: http://spssx-discussion.165.s1.nabble.com/Forced-choice-a-or-b-locus-of-control-scale-ordinal-or-interval-tp5727458p5727461.html
Hi,
This is for my quantitative research proposal (school assignment) in which I propose to do a study on the impact mindfulness training has on stress levels and burnout among externally oriented mental health counselors. Internals tend to cope with stress better than externals.
I wanted to use the internal-external locus of control to identify counselors who are externally oriented and later to see if they became more internally oriented post intervention. I think that when I look at the scale items, they are ordinal as the distance between answer a or b cannot be known, perhaps only assumed. I think that when I look at the total scores, I can treat the data as interval.
I need to know the level of measurement for the entire scale, not individual items.
The researchers who developed the scale provided information on means and standard deviations for samples of several populations.
I appreciate your time and help!
Basia
On Wednesday, October 1, 2014 8:23 AM, Art Kendall [via SPSSX Discussion] <[hidden email]> wrote:
look at the norms for the test, how are they expressed?
In the articles you used to prepare your study, what kinds of statistical techniques did they use?
is the underlying construct continuous?
Do you have a reason to expect that the intervals between values are severely discrepant from each other?
Are you using the scale as previously developed in a study or are you trying to further develop the scale?
Are you concerned about the level of measurement of each item or the level of measurement of the scale score?
Art Kendall
Social Research Consultants
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