Date: Mon, 17 Oct 2011 11:26:55 -0700
Reply-To: Mohamed Fawzy Afify <firstname.lastname@example.org>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Mohamed Fawzy Afify <mohamedfawzy74@YAHOO.COM>
Subject: Re: A 4 point Likert scale
Thank you for your help.
The point is, I do not want to have a neutral position. This is not a construct.
so do you suggest a 6 point scale , giving more stretch and eliminating the neutral status?
However, I do have a construct [5 items] that was originally measured on a 4 point scale and I intend to use it.
From: Art Kendall <Art@DrKendall.org>
To: Mohamed <mohamedfawzy74@YAHOO.COM>
Sent: Monday, October 17, 2011 8:19 PM
Subject: Re: [SPSSX-L] A 4 point Likert scale
Why do you want to use only a 4 point Likert scale?
_The more you restrict the variance of a variable the more you
restrict its possible covariance._
As a rule of thumb you want items to approximate a continuous
construct as much as possible given who your respondents are.
An actual Likert item has 5 points SD D ? A SA. Do you have a
Disagree to Agree construct for your response scale?
If your scale has many items, the total (mean) score might not be
If you do not have scales, but are measuring a construct with a
single variable the restriction of variance and therefore on
covariance is even more problematical.
In short, a 4 point response scale is usually inadvisable. Why
coarsen your measurement any more than is really necessary?
Social Research Consultants
On 10/17/2011 1:13 PM, Mohamed wrote:
Hi I intend to use a 4 point Likert scale format in my survey. I want to know if this puts limitations on the type of statistical analysis
tests conducted? Regards Mohamed --
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